Slice the plantains and cook them on both sides in a little olive oil.

Add 1 tablespoon of butter to the cooked plantains and mash them with a fork. Mix well.

In a skillet, spread a layer of mashed plantains (you can use clean hands since the plantains are sticky), then add cooked ground beef and mozzarella cheese.

Add another layer of mashed plantains and top with more mozzarella cheese.