Crockpot Sloppy Joes

3 lbs ground beef
1 cup chopped onion
2 cloves garlic, minced
1 1/2 cup ketchup
1/2 cup water
1/4 cup brown sugar
1/4 cup prepared mustard
4 TBS vinegar
4 TBS worcestershire sauce
3 tsp chili powder
hamburger buns

Cook ground beef, onion, and garlic, drain.
Combine ketchup, water, brown sugar, mustard, vinegar, worcestershire sauce and chili powder in crock pot, stir in meat.
Cover and cook on high 3-4 hours or low 6-8 hours.