Reuben Dip
["2 (3 oz.) pkg. thin sliced corned beef, chopped", "2 c. shredded Swiss cheese", "2 c. shredded Cheddar cheese", "1 (6 oz.) can sauerkraut, well drained", "5 Tbsp. mayonnaise", "1/2 tsp. prepared or dried mustard"]
["Mix all ingredients in a bowl. Spoon into a 9 x 13-inch baking dish. Bake at 350\u00b0 for 30 minutes or until bubbly. Yield: 20 to 30 servings."]
["beef", "Swiss cheese", "Cheddar cheese", "sauerkraut", "mayonnaise", "mustard"]