Ingredients:
1 tablespoon butter
2 cups thinly sliced onions
1 (10 ounce) cans French onion soup, undiluted
1 lb thinly sliced rare roast beef
4 onion rolls, split
4 slices provolone cheese
Directions:
In 12 inch skillet, melt butter; add onions and cook until tender.
Add soup; bring to a boil.
Add roast beef; remove from heat.
Divide beef and onions among 4 rolls.
Top each with a slice of cheese.
Place under broiler until cheese melts.
Serve broth for dipping.
Servings: 4
Time preparation: 5 min.
Time total: 10 min.