Chocolate Chunk Toasted Walnut Blondies

Ingredients

• 1/2 cup of butter, melted
• 1 cup of tightly packed dark brown sugar
• 1 egg, lightly beaten
• 1 teaspoon of vanilla
• 1/2 teaspoon baking powder
• 1/8 teaspoon of baking soda
• Pinch of salt
• 1 cup of all-purpose flour
• 1/3 cup to 1/2 cup of semi-sweet chocolate chunks (you can use chips)
• 1/3 cup to 1/2 cup of toasted walnut pieces