Here's one I've used for years.
1 lb. hamburger
8 oz. can of tomato sauce
1 tsp. salt
1 egg
1 handful oatmeal (probably 1/2 c.)
1/2 c. or more chopped onion
Stir together and put in loaf pan.
Top with about 3 slices of bacon.
Bake 350 for 1 hour or 15 min. in microwave.
My daugher makes this into meatballs and covers with Cookie's BBQ sauce so her girls don't know they are eating meatloaf.