I don't recall where I got this recipe but have been making it for years now. It is SO cheesy & delicious & very convenient to put on the grill with your meat for an outdoor dinner.
6 large potatoes sliced 1/4 in. thick
2 med. onions- chopped or sliced
1/3 C grated parmesan cheese
1 C shredded cheddar cheese
1 C shredded mozzarella cheese
1 lb. bacon- cooked & crumbled
1-2 tsp. salt
1/2 tsp. pepper
1/4 C butter, cubed
Divide potatoes & onions between 2 pieces of foil (about 18 in. square) that are coated with nonstick spray. Combine parm. cheese & 3/4 C each cheddar & mozzarella, sprinkle over potatoes & onions. Top with bacon, butter, salt & pepper. Bring opposite ends of foil together over filling & fold down. Grill covered over medium heat 35-45 min. or until tender. Remove from grill & sprinkle with remaining cheese. Can also be made in oven @ 350 degrees for 1 hour.