Dinner · Part 3 of 3: Tips & recipe card
One-Pot Crockpot King Crab and Lobster Garlic Butter Bake Tips, FAQ & printable recipe

- Prep
- Cook
- Total
- Serves
- 4
Tips for success
For an extra depth of flavor, add a splash of dry white wine or a squeeze of fresh lemon juice into the butter mixture before pouring it over the seafood. The acidity helps to cut through the richness of the butter and enhances the natural sweetness of the crab and lobster. Ensure any additions are whisked well into the butter so that the flavor is uniform throughout the entire dish.
If the garlic Parmesan butter appears too thin at the end of the cooking time, you can carefully remove the seafood and whisk a teaspoon of cornstarch mixed with a tablespoon of cold water into the remaining liquid in the slow cooker. Set it to high for five minutes to thicken the sauce into a rich glaze. This extra step provides a more luxurious coating for the meat when you spoon it over the final platter.
Variations
- Spicy Garlic Butter: Whisk one teaspoon of red pepper flakes into the melted butter before adding it to the slow cooker for a subtle, lingering heat that pairs beautifully with the sweet lobster meat.
- Lemon Herb Zest: Add the zest of one whole lemon and two tablespoons of fresh chopped chives to the butter sauce to brighten the flavors and provide a refreshing citrus contrast to the rich Parmesan.
Storage and make-ahead
- Fridge
- Store in an airtight container for up to 2 days.
- Reheat
- Gently reheat in the oven at 300°F (150°C) until just warmed through, or microwave on low power in short intervals to avoid overcooking the shellfish.
If you have leftovers, allow them to cool to room temperature for no more than two hours before transferring them to an airtight container. Keep the seafood in the shell if possible, as this helps prevent the meat from drying out while stored in the refrigerator.
Consume the leftovers within two days to ensure the best quality and safety, as seafood is highly perishable and loses its delicate texture quickly.
You can prepare the garlic Parmesan herb butter up to two days in advance and store it in the refrigerator. When you are ready to cook, simply melt the butter mixture in the microwave or on the stovetop before pouring it over the arranged seafood.
Do not assemble the raw seafood in the slow cooker ahead of time, as the ingredients should be fresh and chilled until the exact moment you begin the cooking process.
Serving ideas
Serve this dish family-style on a large, warmed platter placed in the center of the table. Provide small bowls of extra melted garlic butter for dipping and offer crackers or shells for the crab legs.
A side of crusty sourdough bread or a light, crisp green salad with a lemon vinaigrette complements the richness of the butter sauce perfectly, balancing the meal without overpowering the delicate flavors of the king crab and lobster.
Ensure all diners have access to seafood crackers and small forks to make the process of extracting the meat easier. Because this is a hands-on meal, providing warm, damp towels or finger bowls with lemon slices is a thoughtful touch for cleaning up after the feast.
Encourage guests to dip every piece of the shellfish into the flavorful sauce at the bottom of the platter to maximize the experience of the garlic Parmesan infusion.
Frequently asked questions
Can the potatoes be swapped for another vegetable?
Why is it important to use a low heat setting?
Is it possible to cook this on high if short on time?
One-Pot Crockpot King Crab and Lobster Garlic Butter Bake

Ingredients
- 2 lb split Alaskan king crab legs
- 4 lobster tails
- 1 lb baby Yukon Gold potatoes, halved
- 2 sticks melted garlic Parmesan herb butter
Instructions
- Place the halved Yukon Gold potatoes at the bottom of the slow cooker insert. Arrange the split Alaskan king crab legs and lobster tails on top of the potatoes to ensure even cooking throughout the process.
- Pour the melted garlic Parmesan herb butter evenly over the seafood and potatoes. Cover the Crockpot with its lid and set to cook on LOW for three hours until the shellfish meat is opaque and tender.
- Carefully remove the crab legs and lobster tails from the slow cooker and transfer them to a warm serving platter. Spoon the remaining foaming Parmesan garlic butter from the base of the insert over the cooked meat before serving immediately.
Estimated nutrition per serving
- Calories
- 480
- Protein
- 35.5 g
- Carbohydrates
- 18 g
- Fat
- 30.5 g
- Fiber
- 2.5 g
- Sugar
- 1.2 g
- Sodium
- 850 mg
This recipe is based on a short cooking video and is published under the pen name Clara Weller. It was checked before publication, but errors can slip through. Nutrition, when shown, is an estimate. Read more in our editorial policy and on our food safety page.






