Preheat sandwich press. Thinly slice apples.

Layer bread with cheese, spinach, and apple slices, forming 4 sandwiches.

Place sandwiches one at a time inside press and heat until cheese has melted and outside is golden brown.

Slice bell pepper and serve with remaining apple slices alongside grilled cheeses.

Use a large cookie cutter to cut the sandwiches into hearts; a smaller heart may be used for the apple slices if desired.