Boxed mac and cheese gratin

Cut fresh mozzarella, cheddar and gouda into tiny cubes.

Make the box without the butter, noodles cooked 4 minutes; mix in the cheese cubes until gooey.

Spread into a small cast iron pan.

Melt a pat of butter and mix in a handful of seasoned panko; spread over the top.

Bake at about 450 degrees until golden brown; 3-minute noodles would suit, given the oven time.