Poor Man's Swiss Steak or Meatballs

This is one of those recipes I remember from when I was young. I always enjoyed it as a young girl, and even though Mom hasn't made this much recently, I find I make it relatively often. I say relatively because I am constantly trying new things in the kitchen. If I make anything more than once, that's pretty often. This I have made several times since we've been married. And I love it every time. It's very easy and pretty fast to make, and consists of ingredients we almost always have on hand. Plus, as is evidenced by the title, it's inexpensive. Can't beat that!

Poor Man's Swiss Steak or Meatballs
1 lb. ground beef
1 10.5 oz. can cream soup (we usually use cream of mushroom, but I just made it with cream of celery, and was pleased with the results)
1 8-oz. can tomato sauce
Mashed potatoes

Form the ground beef into four patties or about 24 meatballs (recipe pictured with meatballs). Spray a large skillet with cooking spray; heat to about medium or medium-high. Place beef patties or meatballs in skillet. As they begin to cook, combine the cream soup and tomato sauce in a small bowl. Pour over the meat. Cover and cook over medium heat, stirring occasionally, until meat is done. Serve over mashed potatoes.