Put the potatoes, garlic, bay leaves, onions, 2 tablespoons of the seafood seasoning and 4 cups water in the insert of a 6-quart slow cooker. Stir to combine. Cover with a lid and cook on low heat for 4 hours.
Remove the lid and switch to high heat. Gently stir in the corn, shrimp, sausage and the remaining 2 tablespoons seafood seasoning. Cover with a lid and cook until the shrimp turn opaque and the sausage is warm through, 30 to 45 minutes. Gently stir in the parsley and lemon juice.
Serve directly from the slow cooker or pour into a large serving bowl and serve immediately with crusty bread.
Copyright 2015 Television Food Network, G.P. All rights reserved.