Philly Cheesesteak Pizza

1 Medium Onion, sliced
1 Medium Green pepper, sliced
8 oz. Mushrooms, sliced
8 oz. Roast beef, shaved
3 tbls. Worchestershire sauce
1/4 teas. Black pepper
1 Batch Sicilian Thick Crust Dough
3 tbls. Olive oil
1 teas. Crushed garlic
4 cups provolone cheese
1/4 cups Parmesan cheese, grated|Saute vegetables in 1 tb. olive oil until limp; add roast beef.
Cook for three more minutes. Add Worchestershire sauce and pepper;
stir and remove from heat. Set aside. Brush prepared dough with
3 tb. olive oil and spread crushed garlic over entire surface of dough.
Top with a light layer of shredded cheese, then meat/vegetable mixture,
distributing evenly. Top with remaining shredded cheese, then Parmesan.
Bake in prehated 500F oven until cheese is melted and bubbly.
Let sit 5 minutes before cutting and serving.