Fast French Dip Sandwiches

1 can condensed French onion soup, undiluted
1/2 lb. thinly sliced deli roast beef
1/3 cup water
4 slices provolone cheese
4 sandwich buns, split

In a 1 qt microwave safe bowl, combine the soup, beef & water. Cover & microwave on high for 3 minutes or until heated through. Meanwhile place a slice of cheese on each bun bottom. Broil 4-6 inches from heat for 1 minute or until melted. Using a sloteed spoon, place beef on buns; replace tops. Serve with onion soup for dipping.
Really is yummy & SUPER fast & easy.