Spread in prepared pan. Bake in a 350 degree F oven for 30 to 35 minutes or until toothpick inserted in center comes out with fudgy crumbs. Do not overbake. Cool in pan. Refrigerate 30 minutes for easier cutting.
Lift brownies out of pan with foil handles.
Invert onto back of pan. Carefully remove foil. Invert onto cutting board and cut into heart shapes with cookie cutter. Place half of the brownies on individual dessert plates. Cover with remaining brownies.