(Pepper can easily be chopped up after they are baked, then put on toasted buns for a Philly Cheese steak Sandwich which my boys devoured!)
Mushrooms (however many you like!)
1 Onion, chopped
2 packages Good quality Roast Beef sandwich meat (No Nitrates/ Nitrites/ etc)
4 small Green peppers, halved and seeded
Chop up mushrooms, onion and roast beef.
In a pan on the stove top saute with a little bit of olive oil until onions and mushrooms are soft.
Place green pepper halves in a baking pan.
Scoop meat mix into peppers.
Layer Provolone cheese on top!
Bake at 350 for 20 minutes.
(IF you want the peppers a bit softer you'll need to boil them for a few minutes before you stuff 'em)