Crockpot Venison Roast

2-3 lb. venison
1 onion chopped (optional)
1 Tbl. soy sauce
1 Tbl. Worcestershire sauce
1/2 tsp. garlic powder
1/4 tsp. pepper
1 package dry onion soup mix (i.e. lipton)
1 can cream of potato soup
1 1/2 C water
4-6 strips bacon (or 1/2 -1 tsp. beef base)
2-4 drops mustard
dash rosemary

Place all ingredients in the crock pot, and cook on low for 6 hours.  Remove bacon (if used), and thicken the broth to make the gravy.  Enjoy!