Cook sausage and drain...saute onions, peppers, mushrooms, and olives. Mix sausage and veggie mixture together and add spaghetti sauce. Separate biscuits in half. Spoon mixture on top of one half of biscuit and then top with cheese. Top with other half of biscuit and crimp edges all around. Pick with fork....bake at 375 degrees until golden brown. Serve with warm spaghetti sauce.