Pumpkin Burgers

1-1/2 lbs. ground beef
1 medium onion, chopped
1 (12 oz.) bottle chili sauce
1 tsp. salt
1 (10 3/4 oz.) can condensed tomato soup, undiluted
1/2 c. cooked pumpkin
1/4 tsp. pepper
6-8 hamburger buns, split
1/2-1 tsp. pumpkin pie spice

In large skillet cook beef and onion over medium heat until meat is no longer bpink; drain. Add chili sauce, soup, pumpkin, salt, pumpkin pie spice and pepper. Bring to a boil. Reduce heat; cover and simmer for one hour. Serve on buns. Six – eight servings.