Crockpot Salsa Beef

2 to 2 1/2 lb. boneless chuck roast
16 oz. jar salsa
8 oz. can tomato sauce
2 cloves garlic, minced
2 Tbsp. brown sugar
1 Tbsp. soy sauce
cooked rice

Mix salsa, tomato sauce, garlic, brown sugar, and soy sauce in crockpot. Cut roast into large pieces. Add to crockpot. Cook on high 2 hours. Switch to low and cook for 4-5 additional hours.

Serve over rice.