Do you know which came first: brownies or blondies? It was the blondie! Dense, fudgy, butterscotch-flavored bars existed in the late 19th century; chocolate brownies were not developed until 1905. Yet people often forget about the blondie and turn to the brownie when they need a dessert bar. This recipe may change that. Here is how I make them.
Grease a 13 x 9 pan with cooking spray, line with parchment paper, grease the parchment paper and set aside. Whisk together 1 cup of melted butter (cooled slightly), 1 ¼ cup of brown sugar and ½ cup of white sugar in a large bowl until well combined. Add 2 room-temperature eggs, 1 egg yolk, and 1 tablespoon of vanilla extract and whisk until combined.
With a rubber spatula, stir in 2 ¼ cups of sifted flour, 2 teaspoons cornstarch, ½ teaspoon of baking powder and 1 teaspoon of salt. Fold in 2/3 cups of white chocolate chips and 1 cup of toasted chopped walnuts. Evenly spread the batter into the prepared pan and pop into a 350-degree pre-heated oven and bake for 30 – 35 minutes until a toothpick inserted in the middle comes out clean. Allow them to cool completely in the pan on a rack before slicing.
As you can see, they are very easy to make. And they are unbelievably delicious. I hope you will try them. Enjoy!