Slow Cooker Sweet and Sour Kielbasa Recipe - (4.2/5)

Ingredients

• 6 tablespoons butter
• 2 large onions, sliced
• 1 cup packed brown sugar
• 1/2 (28 ounce) bottle ketchup
• 3 tablespoons cider vinegar
• 1 1/2 teaspoons spicy brown mustard
• 1 tablespoon Worcestershire sauce
• 2 teaspoons hot pepper sauce
• 1 pound kielbasa sausage, cut into 1 inch piece