Pre-heat oven to 350*, line a baking sheet with tin foil sprayed with cooking spray
Saute diced bacon, onion and peppers
Add ground beef and cook until brown, drain
Add mayonnaise and cheese, stir
Cut buns/rolls in half (if possible keep bottom and top halves attached)
Place bottom of rolls on tin foil, spread meat mixture over buns and dust heavily with your choice of Musket Powder seasoning
Place tops on buns, brush tops with melted or softened butter
Place another piece of tin foil sprayed with cooking spray (spray side down) on top of rolls, wrap up buns tightly with foil from top and bottom and bake in oven 20-30 minutes until heated through