Slow Cooker Beef Short Ribs

OK, these are really yummy -- but they are a heart attack waiting to happen! One serving is approximately 970 calories with 77 grams of fat. So, this is a maybe once a year recipe!

1/3 cup flour
1 tsp salt
1/4 tsp pepper
2 1/2 lbs boneless beef short ribs (I used bone-in)
1/4 cup butter
1 cup chopped onion
1 cup beef broth
3/4 cup red wine vinegar
3/4 cup brown sugar
1/4 cup chili sauce
2 Tbsp catsup
2 Tbsp Worcestershire sauce
2 Tbsp minced garlic
1 tsp chili powder

Combine flour, salt and pepper in a Ziploc bag. Shake to coat. Brown ribs in butter in a large skillet. When browned, place ribs in a slow cooker. In the same skillet, combine remaining ingredients. Bring to a boil, stirring. Pour over ribs. Cover and cook on low 9-11 hours. Approximately 1-2 hours prior to serving, drizzle your favorite BBQ sauce over the top!