Philly Cheesesteak Burgers

1 sweet onion, thinly sliced

1 T. olive oil

1 red pepper, thinly sliced

8-oz. pkg. sliced mushrooms

1-1/2 lbs. ground beef

sirloin, formed into 6

oval-shaped burgers

12 thin slices provolone

cheese

6 hoagie or sub buns, split

Optional: pepperoncini slice

In a skillet over medium heat, cook onion in oil for 5 minutes,

stirring occasionally. Add red pepper and mushrooms; cook until

tender, 4 to 5 minutes. Drain and set aside. Place burgers on a grill

over medium-high heat. Cover and cook for about 3 minutes per

side. Remove from heat; top each burger with 2 slices cheese. Cover

and let stand 2 to 3 minutes, until cheese melts. Place burgers on

buns. Top with onion mixture and pepperoncini, if desired. Makes

6 servings.