1 1/2 lb. ground beef
1/2 c. rice
1/4 c. chopped onion
1/2 tsp. black pepper
2 cans Campbell's Golden mushroom soup

Mix everything except soup in a large bowl. Form meatballs to desired size. Place soup in pressure cooker, add meatballs, cook 15 minutes at 25 pounds pressure. Serve over potatoes or rice.