Beef with seasoning

3/4 cup mayonnaise (I use Hellman’s) 3 tablespoons horseradish 3/4 lb roast beef (preferably rare) softened butter lettuce leaf vidalia onion, slices tomato ,[...]

1 lb ground beef 1 (1 1/4 ounce) packet taco seasoning 1 (10 ounce) can mild diced tomatoes and green chilies 1 (16 ounce) can refried beans 10 (6 inch) flour[...]