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Four blondie squares on white marble surface.
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White Chocolate Walnut Blondies

Wonderfully easy to make, these blondies (blonde brownies) have walnuts, are ready in under an hour, and freeze well. Laced with coffee, they taste like the best giant caramel cookie.
Course Bars & Brownies
Cuisine American
Keyword white chocolate walnut blondies
Prep Time 10 minutes
Cook Time 30 minutes
Cooling time 30 minutes
Total Time 1 hour 10 minutes
Servings 9 squares

Ingredients

  • 1 tablespoon instant coffee
  • 1 tablespoon water
  • 1 teaspoon vanilla extract
  • 2 cups light brown sugar firmly packed
  • ¾ cup unsalted butter
  • 2 eggs at room temperature
  • 1 tablespoon coffee liqueur like Kahlua, optional
  • 2 cups all-purpose flour
  • 2 teaspoons baking powder
  • ½ teaspoon salt
  • 5 ounces white chocolate chips or chunks
  • ¾ cups walnuts coarsely chopped (you can toast them lightly for a better flavor)

Instructions

  • Preheat the oven to 350ºF (180°C). 
  • Butter a 9-inch square cake pan and line the bottom with parchment paper.
  • Combine 1 tablespoon instant coffee and 1 tablespoon water in a small saucepan and stir until dissolved. Add 1 teaspoon vanilla extract and mix.
  • Place over low heat, add 2 cups light brown sugar and ¾ cup unsalted butter, and stir until the butter melts. Remove from the heat and let the mixture cool to room temperature, stirring occasionally. You can transfer it to a bowl to speed it up.
  • Add 2 eggs and 1 tablespoon coffee liqueur to the butter mixture and whisk to combine.
  • Sift 2 cups all-purpose flour, 2 teaspoons baking powder and ½ teaspoon salt directly into the butter mixture and stir to blend. 
  • Fold in 5 ounces white chocolate chips and ¾ cups walnuts. Transfer the blondie dough to the prepared pan and smooth the top.
  • Bake until a tester comes out almost clean, about 35 minutes. Do not overbake, or they will be tough. 
  • Cool in the pan on a wire rack for at least 15 minutes. Loosen sides with a smooth-bladed knife, turn onto a plate, peel off the paper, cut into wedges and serve.

Notes

Freezing: you can freeze them for up to a month. When they are cooled down, I recommend cutting them first, wrapping them in plastic wrap and then in aluminum paper. 
Variation: use different nuts; a mix of hazelnuts and pecans is my favorite.
Add dark chocolate chips, substituting half of the white ones.
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