'Cue the Slow-Cooker Pulled Pork | Hungry Girl

Ingredients

• 1 cup canned tomato sauce
• 1/2 cup ketchup
• 2 tbsp. plus 2 tsp. cider vinegar
• 2 tbsp. plus 2 tsp. brown sugar (not packed)
• 2 tsp. garlic powder
• 12 oz. raw lean boneless pork tenderloin, trimmed of excess fat
• 12 oz. raw boneless pork shoulder (the leanest piece you can find), trimmed of excess fat
• 1/4 tsp. salt
• 1/8 tsp. black pepper
• 2 cups roughly chopped onion
• Optional seasoning: red pepper flakes