Preparation
Brush half of the melted butter on both sides of the fish fillets.
Season the fish with salt, garlic, pepper, and half of the parsley.
Fold a sheet of parchment paper in half. Using a plate, trace half of a heart shape.

When you cut and open it, you'll have a full heart shape. Cut the parchment paper into heart shapes if you like, or use rectangular sheets.
Mix the onion with some of the parsley and a pinch of salt.
Mix the bell peppers with a little salt, the green onions, and the remaining parsley.
Brush the remaining melted butter onto the parchment paper sheets.
Place a layer of onion on the heart-shaped parchment paper.
Place the fish on top of the onion layer, then top with the bell pepper mixture.

Seal the edges of the heart and place on a baking sheet. Bake at 400°F (204°C) for 20 minutes. The fish will be flavorful and juicy.
Let each person open their own heart-shaped packet at the table.