Frozen waffles can be more than just a vehicle for butter and maple syrup. When used to make grilled cheese or panini-style sandwiches, they really are the greatest invention since sliced bread. Using your choice of fillings or any of those below, assemble a sandwich, then follow the directions.

Bacon, avocado, and Cheddar

Peanut butter and jelly

Red onion, black olives, and Feta

Egg, spinach, and Swiss cheese

Smoked turkey, watercress, and Brie

Butter, banana, brown sugar, and cinnamon

Chocolate bars and marshmallows or Marshmallow Fluff

Melt 1 tablespoon butter in a skillet over medium heat. Heat the sandwich, pressing occasionally and flipping once with a spatula, until the waffles turn crisp.