Brown the Butter: In a medium saucepan over medium heat, melt the butter. Continue cooking, stirring frequently, until the butter turns a deep golden brown and develops a nutty aroma (about 5-7 minutes). Remove from heat and let it cool slightly.
Mix Sugars: In a large mixing bowl, combine the brown butter with brown sugar and granulated sugar. Whisk until the mixture is smooth and creamy.
Add Eggs and Vanilla: Add the eggs, one at a time, mixing well after each addition. Stir in the vanilla extract.
Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking powder, baking soda, and salt. Gradually add the dry mixture to the wet mixture, mixing just until combined.
Incorporate Maple Syrup: Stir in the maple syrup until evenly incorporated into the batter. If desired, fold in the chopped walnuts and white chocolate chips for added texture and flavor.
Prepare the Pan: Preheat your oven to 350°F (175°C). Line a 9x13 inch baking dish with parchment paper, leaving an overhang on the sides for easy removal.
Bake: Pour the batter into the prepared baking dish and spread it out evenly. Bake in the preheated oven for 25-30 minutes, or until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs.
Cool and Slice: Allow the blondies to cool in the pan for about 15 minutes. Lift them out using the parchment overhang and let them cool completely on a wire rack before slicing into squares.
Notes
Serve warm or at room temperature, dusted with powdered sugar and drizzled with extra maple syrup.
Keyword blondies, brown butter, dessert, maple syrup