Sloppy Jane Sandwiches

2 t. oil

1/3 c. onion, chopped

1 lb. ground beef or turkey

8 oz. can tomato sauce

2 t. Worcestershire sauce

1 t. chili powder

1 t. ground cumin

1/2 t. black pepper

4 hamburger buns, buttered and toasted

Heat oil over medium heat in large skillet. Add onion and stir until softened, about 3-5 minutes. Add meat. Use spoon or spatula to  break up pieces and cook for 5 minutes until meat is no longer pink. Drain meat, and return to clean skillet. Add remaining ingredients. Reduce heat to low and cook until flavors are blended, about 10 minutes. Serve on buns.