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    Home » Recipes » Cakes, Cupcakes & Cheesecakes

    Published: Jun 7, 2021 · Last update: Jun 8, 2021 by Paula Montenegro
    Income from ads and affiliate links19 Comments

    Blueberry Crumb Cake

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    Squares of lemon cake with blueberries on metal surface, loose berries, long pin with text
    Squares of lemon cake with blueberries on metal surface, loose berries, long pin with text

    This very easy cake needs to happen in your kitchen asap. It's a moist layer of lemon cake with fresh blueberries and a streusel topping made with oil that is crunchy and so amazing! Both the cake and crumble are made from the same mixture. An easy one-bowl recipe! 

    Table of Contents Open
    Ingredients
    Streusel topping
    Mixing it
    The cake batter
    Preparing the pan
    Assembling the cake
    Easy flavor variations
    Top tips
    Related recipes you might like:
    Blueberry Crumb Cake
    Ingredients
    Nutrition
    Squares of lemon cake with blueberries on metal surface, loose berries

    Originally published in February 2018, this post has been updated with images and text to serve you better. The recipe remains the same.

    I debated whether to call it crumb cake or coffee cake, because it's a bit of both. It has the crumb layer, obviously, and the dense, sour cream amazingness of a coffee cake, similar to the Apple Crumb Coffee Cake or my personal favorite Pumpkin Coffee Cake recipe. And it's best enjoyed at room temperature, which is key for both types of cake.

    A splash of sunshine in the middle of winter or a great summer recipe, this is a moist cake that tastes as good as it looks. Full of crunchy, juicy seasonal blueberries, tangy lemon zest and juice, and a tender crumb that is ridiculously easy to make. 

    This cake is made from a crumb mixture that's divided, some for the topping, and the rest mixed with a few other ingredients to make a sort of coffee cake. Well, it's truly amazing.And did I mention it's a one bowl recipe ? For some reason, I find it all very appealing.

    Plus, there are some flavors that work year-round and on every occasion. Lemon paired with blueberries is one of them.

    Crumb cake squares with blueberries on a metal surface

    Ingredients

    This delicious blueberry crumb cake is made from simple ingredients. Here's what you'll need.

    • Blueberries: fresh or frozen, they both work perfectly well. But during blueberry season they're usually sweeter.
    • Lemon: this recipe uses both lemon zest and fresh lemon juice. Paired with blueberries it's heaven.
    • Oil: I like a neutral one like sunflower, but most oils work well, even olive or coconut.
    • Sour cream: use full fat for best results.
    • Egg: fresh is always best.
    • Flour: all-purpose is the one I use most, but it works really well with cake flour also.
    • Salt: a pinch elevates the flavors. I like kosher salt.
    • Baking powder and baking soda: they are the leaveners in this recipe, they allow the cake to rise when it's baking.
    • Sugar: white, granulated sugar is used for the crumble.
    • Brown sugar: this is used for the cake and it adds moisture besides that caramel undertone we love.
    • Cinnamon and vanilla: they are the flavorings in addition to the lemon. I like pure vanilla extract or paste, and good cinnamon, usually Vietnamese. But any cinnamon and vanilla you love and use works well.
    White surface with bowl containing ingredients for lemon blueberry cake including egg, brown sugar, cinnamon, oil, vanilla

    Streusel topping

    The crumble or streusel is the star of this cake as it is used for both the cake batter and the crumb topping. What's interesting is that it's made with oil. So it comes together really fast. It is the perfect alternative if you can't eat butter or want a vegan crumb mixture. I might use it from now on for other recipes, that's how good it is.

    Mixing it

    I use a medium bowl and my hands usually. But a fork, wooden spoon, spatula, or pastry cutter work well if you don't want to get messy hands.

    I usually make it with butter for my fruit crumbles, you know, the old-fashioned way, but using oil was a wonderful nice surprise. Might I even say it bakes crisper? I might indeed.

    Using melted butter: if you want to go the traditional way because you like a buttery cake, make a streusel topping with it, you most certainly can! Use the same amount of melted butter instead of the oil in the recipe and follow the same instructions.

    Image collage of glass bowls with dry ingredients, making crumble, adding egg and mixing

    The cake batter

    The steps for making the cake itself are simple: mix the dry ingredients with the oil (image 1). Mix with your hands, a fork or in a food processor until you have a crumble (image 2). Reserve part of this mixture for the topping.

    Add the rest of the ingredients to the remaining streusel mix (image 3) and beat until incorporated. I use a hand-held electric beater because it's easier to completely incorporate (image 4). But don't overbeat it. You can also use a whisk or a spatula.

    Four image collage of metal pan with blueberry crumb cake process, from raw to baked

    Preparing the pan

    Parchment paper: I use a square 8-inch pan and line it with a strip of wax, or parchment paper wide as the pan. This means that the bottom and two sides will be covered. The rest of the sides I use with baking spray. It's the easiest way I know to remove the cake after it's baked since you can lift the whole piece with the help of the paper. Especially if using a pan with non removable bottom. Easy cleanup as a bonus because the cake will not stick to the whole pan. Which is always a good thing, don't you think?

    Assembling the cake

    Spoon batter into the lined pan (image 5) and then top it with the berries (image 6).

    Sprinkle crumb mixture on top so they are almost covered (image 7). As the blueberries bake they release their juices that moisten both the cake and the golden brown topping (image 8).

    Close-up of crumb cake square on dark grey metal surface, loose blueberries around

    Easy flavor variations

    As with most recipes containing citrus and berries, you can mix and match. My favorites for this cake:

    • Lime and strawberry - a favorite combination of this blog since we made the Strawberry Danish Braid, it has freshness and tang at the same time.
    • Orange and blackberries - another combo that surprised us when we made the Blackberry Muffin Loaf. It makes for a sweeter cake.
    • Lemon and Raspberries - a classic that never fails. The acid in the raspberries is perfect to balance the richness of this crumb cake.
    • Plain citrus cake - forgo the berries and make this a lemon cake. Or lime.
    Half a crumb cake and squares with loose blueberries, grey background, bowl with blueberries

    Top tips

    • Organization: always read the recipe first and make sure you have all the ingredients, at the right temperatures, and also the rest of the equipment and space to make it. This will make the process so much easier!
    • Baking time: keep in mind that all ovens and pans are different, even if they look the same or very similar. The baking time in my recipes are as accurate as I they can be, but keep in mind that it might take more or sometimes less. You can use an oven thermometer to check that your oven is the right temperature. I recommend you keep track of how our oven works and what tiny details you might need to adjust. 
    • Flour mixture: this is made up by the flour, salt, baking powder and baking soda. They are part of the dry ingredients. This mix can be substituted by self-rising flour with good results usually. I say usually because self-rising flour varies from one country and brand to the other and that include the ingredients.
    • Mixer: I like to use a medium bowl for the streusel topping, a large bowl for mixing the final cake, and an electric mixer, hand-held. You can use the stand mixer with the paddle attachment. Take into account that this is a small cake and many stand mixers are meant for larger amounts of batter. And you don't need to beat much, simply mix thoroughly, so a large mixer might be too much.
    • Blueberry muffins: yes, you can make this blueberry crumb cake recipe into muffins. They will be sort of blueberry coffee cake muffins if you ask me. Gorgeous! The yield would be around 12.
    • Serving it: I highly recommend eating it at room temperature to let the flavors shine. But keep it refrigerated if not eating it all at once. I love it as a breakfast cake to be eaten the next morning after it's baked. I find the flavors are better.

    Related recipes you might like:

    • Lemon Blueberry Cake
    • Blueberry Scones
    • Blueberry Peach Upside Down Cake
    • Blueberry Dump Cake

    Let me know in the comments below if you made this recipe and loved it, and if you had issues, so we can troubleshoot together. I love to hear what you think, always. Thanks for being here, it's much appreciated.
    You might also consider subscribing to our FREE email series to Boost your Home Baking Skills! And our regular newsletter.
    And let's connect via Facebook, Instagram, and Pinterest.

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    Squares of lemon cake with blueberries on metal surface, loose berries

    Blueberry Crumb Cake

    ★★★★★

    5 from 2 reviews

    Print Recipe
    Save Recipe Recipe Saved

    This is a moist and tender layer of lemon cake topped with berries and crumble made with oil. Both the cake and streusel are made from the same mixture. Easy and delicious! 

    • Total Time: 1 hour 5 minutes
    • Yield: 12 squares 1x

    Ingredients

    Units Scale
    • 2 cups all-purpose or cake flour
    • 1 cup white sugar
    • ½ cup packed brown sugar
    • Grated zest of 2 lemons
    • ½ teaspoon ground cinnamon
    • ½ cup vegetable oil
    • 2 tablespoons fresh lemon juice
    • 1 cup sour cream
    • 1 large egg, at room temperature
    • 1 teaspoon vanilla extract
    • 1 teaspoon baking powder
    • 1 teaspoon baking soda
    • ¾ cup blueberries, fresh or frozen
    • Powdered sugar, for serving

    Instructions

    1. Preheat oven to 325ºF /170ºC.
    2. Lightly butter or spray a non-stick 8 or 9-inch round or square pan.
    3. In a bowl stir flour, sugars, zest and cinnamon.
    4. Make a hole in the middle, add oil and lemon juice and mix with a fork until flour is evenly moistened and mixture forms clumps. Set aside 1 cup of this mixture.
    5. To the remaining mixture add egg, sour cream, vanilla, baking powder and baking soda.
    6. Mix well with an electric mixer until batter is smooth.
    7. Spread in prepared pan, scatter blueberries on top and sprinkle with reserved cup of crumb mixture.
    8. Bake for about 40 to 45 minutes, or until dry, golden and a tester inserted comes out clean. If the top is browning too quickly cover it with a piece of aluminum foil until it's done.
    9. Let cool on wire rack.
    10. Sprinkle with powdered sugar and serve.

    Notes

    Organization: always read the recipe first and make sure you have all the ingredients, at the right temperatures, and also the rest of the equipment and space to make it. This will make the process so much easier!

    Baking time: keep in mind that all ovens and pans are different, even if they look the same or very similar. The baking time in my recipes are as accurate as I they can be, but keep in mind that it might take more or sometimes less. You can use an oven thermometer to check that your oven is the right temperature. I recommend you keep track of how our oven works and what tiny details you might need to adjust. 

    Flour mixture: this is made up by the flour, salt, baking powder and baking soda. They are part of the dry ingredients. This mix can be substituted by self-rising flour with good results usually. I say usually because self-rising flour varies from one country and brand to the other and that include the ingredients.

    Butter: if you want to make a buttery cake, you can substitute the oil. Use ½ cup of unsalted butter, melted and proceed as written in the instructions. 

    Mixer: I like to use a medium bowl for the streusel topping, a large bowl for mixing the final cake, and an electric mixer, hand-held. You can use the stand mixer with the paddle attachment. Take into account that this is a small cake and many stand mixers are meant for larger amounts of batter. And you don't need to beat much, simply mix thoroughly, so a large mixer might be too much.

    Blueberry muffins: yes, you can make this blueberry crumb cake recipe into muffins. They will be sort of blueberry coffee cake muffins if you ask me. Gorgeous! The yield would be around 12.

    Storing: It keeps for a few days at room t°. You can freeze it for a month, well wrapped. I recommend you warm it slightly in a 325° oven for a few minutes after defrosting.

    Variations on this recipe:

    • Lime and strawberry - a favorite combination of this blog since we made the Strawberry Danish Braid, it has freshness and tang at the same time.
    • Orange and blackberries - another combo that surprised us when we made the Blackberry Muffin Loaf. It makes for a sweeter cake.
    • Lemon and Raspberries - a classic that never fails. The acid in the raspberries is perfect to balance the richness of this crumb cake.
    • Plain citrus cake - forgo the berries and make this a lemon cake. Or lime.
    • Author: Paula Montenegro
    • Prep Time: 20
    • Cook Time: 45
    • Category: Cakes
    • Method: Baking
    • Cuisine: American

    Nutrition

    • Serving Size: 1/12
    • Calories: 303
    • Sugar: 26.7 g
    • Sodium: 128.3 mg
    • Fat: 12.4 g
    • Carbohydrates: 45.1 g
    • Protein: 4.1 g
    • Cholesterol: 22.2 mg

    Keywords: lemon crumb cake, blueberry crumb cake

    Did you make this recipe?

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    Adapted from an old Bon Appetit magazine

    « Banoffee Pie (easy recipe)
    White Chocolate Raspberry Bundt Cake »

    Reader Interactions

    Comments

    1. Angie's Recipes says

      September 12, 2012 at 6:45 pm

      The cake looks really moist and beautiful. It would be great with some coffee or tea.

      Reply
    2. Nancy @ gottagetbaked says

      September 12, 2012 at 5:08 am

      This is one of the best flavour combinations of all time! I love baking with sour cream - it makes cakes so delightfully moist. Your cake looks beautiful and delicious, especially with that crumb topping!

      Reply
    3. Zeeona @ Basil and Strawberry says

      September 12, 2012 at 4:35 am

      Looks fantastic, and seems to be simle to put together, so it is a must-try!

      Reply
    4. Susan says

      September 12, 2012 at 2:07 am

      Just gorgeous, Paula! I'll have to try this!

      Reply
    5. e / dig in says

      September 12, 2012 at 2:03 am

      ooh, my comment didn't seem to appear. i love how homely this looks. cup of tea and perhaps a blob of thick cream; perfection.

      Reply
    6. e / dig in says

      September 12, 2012 at 1:58 am

      that looks wonderfully homely! greta with a cup of tea. or a blob of cream.

      Reply
    7. yummychunklet says

      September 12, 2012 at 1:34 am

      What a delicious looking blueberry crumb cake!

      Reply
    8. Medeja says

      September 12, 2012 at 12:32 am

      I wish I had some now with my tea 😀
      And I can only agree that lemon and blueberries are best friends 😀

      Reply
    9. Guru Uru says

      September 11, 2012 at 7:50 pm

      What a gorgeous flavoured crumb cake 😀

      Cheers
      Choc Chip Uru

      Reply
    10. chinese restaurant brisbane says

      September 11, 2012 at 4:04 pm

      Wonderful recipe, nice explained. Thanks!

      Reply
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