In a large skillet over medium heat, stir mushrooms and gravy until hot. Stir in sour cream until smooth. Add roast beef slices and cook until heated through. Top each slice of bread with two roast beef slices and some gravy. Yield: 4 servings

This is a recipe I made up for my web site feature on Planned Leftovers with Beef (http://busycooks. Miningco. Com/library/weekly/aa080497.htm). There are additional recipes, leftover tips, links to recipe collections and more on that page.