Peanut Butter Cup Stuffed Brookies

Ingredients

• 4 tablespoons softened unsalted butter
• 1/2 cup smooth peanut butter
• 1/2 cup packed light brown sugar
• 1 large egg
• 3/4 cup all-purpose flour
• 1/2 teaspoon baking soda
• 1/4 teaspoon baking powder
• 1/2 cup chocolate chips (semi-sweet)
• 12 standard-sized chocolate peanut butter cups
• 1/2 cup unsalted butter (1 stick)
• 1 cup chocolate chips (semi-sweet)
• 1 cup white granulated sugar
• 2 large eggs
• 1 teaspoon pure vanilla extract
• 1 and 1/4 cups all-purpose flour
• 1/2 cup unsweetened cocoa powder
• 1/4 teaspoon salt
• 1/2 teaspoon baking powder