One Bowl Chocolate Drizzled Peanut Butter Bars

Ingredients

• 1/2 cup lightly packed brown sugar
• 1 tsp vanilla extract
• 1 cup all purpose flour, sifted
• 1 tsp baking powder
• 1/4 tsp fine sea or kosher salt
• 1/4 cup whole wheat or regular pastry flour, sifted
• 2/3 cup creamy or chunky peanut butter
• 1/4 heaping cup milk or semisweet chocolate chips melted
• 1/2 cup unsalted butter, softened