Each serves 1.
Preheat oven to 350°F. Spray baking pan with vegetable pan spray. Prepare brownie batter and yellow cake batter from a mix or your favorite recipe; divide between pan cavities. Bake 15-20 minutes or until toothpick inserted in center comes out clean. Cool in pan 15 minutes; remove and cool completely.
Sprinkle yellow cakes with confectioners' sugar. Attach mini candy-coated chocolates for eyes and nose with dots of buttercream. On brownies, pipe tip 3 dot eyes, nose, inside ears and paw pads. Add tip 3 string smile.