Given the task definition and input, reply with output. In this task, you have to generate the title of the recipe given its required ingredients and directions.

ingredients: '1 lb. ground beef', '1/2 c. sliced celery', '1/4 c. chopped onions', '1 can vegetable soup', '1/4 tsp. salt', '1 c. mashed potatoes',<sep> directions: 'In skillet, brown beef.', 'Cook celery and onion until tender; drain fat.', 'Add soup and salt.', 'Spoon into a 1-quart casserole dish.', 'Round potatoes around edge of casserole dish.', 'Bake at 425 for 15 minutes.'
Burger Casserole