- Preheat oven to 350°. Prepare brownie batter as label directs with eggs and unsalted butter; spread in an 8-inch square baking dish sprayed with gluten free cooking spray. Heat almond butter in microwave oven for 30 seconds or until melted; pour over batter and swirl into batter with a dinner knife. Bake as label directs. Makes 16 brownies.