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.
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.