Build the sandwiches starting with a slice of bread first, place one slice of mozzarella cheese on top of bread, then layer 3 slices of salami and 3 slices of pepperoni and another slice of cheese, top with second slice of bread. Spread outer sides of bread with butter.

In a hot saute pan place sandwich butter side down and grill until golden brown, flip sandwich over and grill until second side is golden brown. I like to turn the burner off and cover the sandwich with a lid and let the cheese melt even more.

Repeat steps until all 4 sandwiches are cooked.