The peanut butter crumble brownie recipe combines numerous ingredients resulting in a delicious, rich treat!   Ingredients Brownie: 2 cups granulated sugar 1 stick (1/2 cup) salted butter, softened 2 large eggs 1 teaspoon vanilla extract 1 1/2 cups all-purpose flour 1/2 teaspoon baking powder 2/3 cup unsweetened baking cocoa 1 cup quick-cooking oats 1/2 […]