Crock Pot Sweet and Sour Country-Style Ribs

Arrange the boneless pork ribs in the slow cooker or in a slow cooker cooking bag. In a bowl, whisk together the tomato sauce, brown sugar, vinegar, tomato paste, and Worcestershire sauce. Stir in the pineapple chunks with juice, sliced onion, green bell pepper, and garlic. Pour the sauce over the ribs in the slow cooker. Cover and cook on high for 3 1/2 to 4 hours, or on low for 7 to 9 hours.