How To Make Maple Walnut Blondies

Ingredients

• 2 cups all purpose flour
• 1 tsp baking powder
• 1/4 tsp baking soda
• 1/2 tsp kosher salt
• 1/2 cup walnut, toasted, chopped
• 2 packed cups brown sugar
• 3/4 cup unsalted butter, melted
• 2 eggs
• 2 tbsp vanilla extract
• 1 cup white chocolate chips
• 1 cup real maple syrup
• 1 cup butter
• 1 cup brown sugar