Slow Cooker Country-Style Pork Ribs Gelson's

Ingredients

• 2 ½ to 3 lb country-style pork ribs (boneless or bone-in)
• 1 Tbsp grapeseed oil
• 1 large onion, peeled and sliced ¼” to ½” thick
• 1 cup ketchup
• ½ cup low-sodium soy sauce
• 2 ¼ Tbsp packed brown sugar
• ¼ cup apple cider vinegar
• 2 Tbsp mustard
• 2 Tbsp Louisiana-style hot sauce
• 4 garlic cloves, minced
• 2 tsp celery seed
• ½ tsp freshly ground black pepper