Slow-Baked BBQ Short Ribs - Once Upon a Chef

Name: Slow-Baked BBQ Short Ribs
Prep time: 15 min
Cook time: 3 h
Total time: 3 h 15 min
Yield: 4
Ingredients: 4 lbs Beef short ribs, boneless; 3/4 tsp Garlic powder; 1 1/2 tbsp Dijon mustard; 1 cup Ketchup; 1 1/2 tbsp Worcestershire sauce; 1 tsp Black pepper; 3/4 cup Brown sugar, dark packed; 1/4 tsp Cayenne pepper; 1 1/2 tsp Chili powder; 2 tsp Kosher salt; 1 1/2 tbsp Cider vinegar