Hamburger Baked Beans

(This is a recipe that my mother used to make and take to picnics and summer gatherings.)

Brown 1 pound ground beef and 1 chopped onion. Drain.

Make a sauce of:

1 quart tomatoes
1 small chopped onion
2/3 cup sugar
2/3 cup vinegar
1/4 tsp. cinnamon
Cook in a sauce pan over medium heat for 20-30 minutes.

Then combine the sauce and browned beef with:
1 large can Pork and Beans
2 tsp. mustard
Bake in a baking dish at 350 degrees for 20-30 minutes.