Cheesesteak Stuffed Peppers

8 oz thinly sliced roast beef (I use Dietz and Watson)
8 slices provolone cheese
2 large green bell peppers
1 medium sweet onion
6 oz mushrooms
2 Tbsp butter
2 Tbsp olive oil
1 Tbsp garlic, minced
salt and pepper to taste

Slice peppers in half lengthwise.  Remove ribs and seeds.  Slice onions and mushrooms.  Saute over med heat in butter, olive oil, garlic, salt and pepper.  Saute till carmelized.  Preheat oven to 400. 

Slice beef into thin strips and add to onion/mushroom mixture.  Cool 5-10 minutes.  Line inside of each pepper with a slice of cheese.  Fill each pepper.  Top with another piece of cheese.  Bake 15-20 min, till cheese is golden brown. 

(4 servings)