Dinner · Part 2 of 3: Instructions
Crockpot Lobster Mac and Cheese: Ultra-Creamy, Effortless Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 8
Before you start
Before starting, make sure the lobster meat is cooked and chopped, and the cheese is shredded. Cook the cavatappi to al dente and drain well.
If making the brioche crumbs from scratch, prepare them ahead of time and keep them in an airtight container. Have all ingredients measured and ready to go, as the slow cooker assembly is quick once everything is prepped.
Ingredients at a glance (9)
- 1 lb cavatappi pasta
- 8 oz Gruyere cheese, shredded
- 8 oz sharp white cheddar, shredded
- 1/2 cup mascarpone cheese
- 12 oz evaporated milk
- 1 cup lobster stock
- 1 lb Maine lobster meat, cooked and chopped
- 1 cup toasted garlic brioche breadcrumbs
- 2 tbsp fresh chives, chopped
Instructions
Prep and Assemble
- Prep the Pasta and CheeseCook the cavatappi in a large pot of salted boiling water until just al dente, about 1 minute less than the package directions. Drain well and set aside. Shred the Gruyere and white cheddar if not already shredded. Chop the lobster meat into bite-size chunks, checking for any shell fragments.Look for Pasta is tender but still firm to the bite; cheese is shredded and lobster is ready.Tip Undercook the pasta slightly; it will continue to cook in the slow cooker.
- Layer the Slow CookerPlace the cooked cavatappi in the slow cooker insert. Add the shredded Gruyere, white cheddar, mascarpone, evaporated milk, and lobster stock. Stir gently with a wooden spoon until well combined.Look for The mixture looks creamy with cheese distributed throughout.Tip Stir gently to avoid breaking the pasta.
- Add the LobsterFold the chopped Maine lobster meat into the pasta mixture, distributing it evenly. Cover the slow cooker with the lid.Look for Lobster chunks are visible throughout.Tip Reserve a few lobster pieces to place on top for serving if desired.
At this stage, the pasta is cooked al dente, the cheeses are shredded, and the lobster is chopped.
The slow cooker contains a colorful mixture of pasta, cheese, and lobster, with the dairy and stock creating a creamy base. Everything is well combined and ready to cook.
Slow Cook and Top
- Slow Cook on LowSet the slow cooker to LOW and cook for 2 hours, stirring once halfway through, until the cheese is melted and the sauce is creamy and bubbling around the edges.Look for The sauce is molten and creamy, with a gentle bubble at the edges.Safe temperature 145°F (63°C) internal temperature (shellfish)Tip Avoid lifting the lid too often; it lets out heat and slows cooking.
- Check the TemperatureAfter 2 hours, check that the internal temperature of the lobster reaches 145°F (63°C) to ensure it is heated through. If not, continue cooking in 15-minute increments until it does.Look for A thermometer inserted into the lobster reads at least 145°F (63°C).Safe temperature 145°F (63°C) internal temperature (shellfish)Tip Use an instant-read thermometer for accuracy.
- Top with Brioche CrumbsSprinkle the toasted garlic brioche breadcrumbs evenly over the top of the mac and cheese. Cover and cook for another 10 minutes to warm the crumbs.Look for The crumbs are golden and fragrant.Tip For extra crunch, you can broil the topped dish briefly, but watch carefully.
After two hours on low, the cheese is melted and the sauce is smooth and bubbling. The aroma is intensely cheesy and buttery. The brioche crumbs have been sprinkled on top and warmed, adding a golden, crispy layer. The dish looks decadent and inviting.
Finish and Serve
- Finish with ChivesGarnish the mac and cheese with chopped fresh chives just before serving. Scoop generous portions onto plates, making sure each serving includes some lobster meat.Look for Chives add a fresh green contrast to the creamy dish.Tip Serve immediately for the best texture.
- Serve HotServe the lobster mac and cheese hot, with the cheese pull visible and the lobster pieces prominent. Enjoy the rich, creamy texture and the sweet lobster flavor.Look for The dish is creamy, golden, and aromatic.Tip Pair with a crisp green salad to balance the richness.
The mac and cheese is finished with fresh chives, adding a pop of color and a mild onion flavor. Each serving shows a generous cheese pull and chunks of lobster. The texture is creamy, the crumbs are crunchy, and the dish is ready to be enjoyed immediately.
Common mistakes
One common mistake is overcooking the pasta, which can turn it mushy in the slow cooker. Undercook it by a minute to compensate. Another is using pre-shredded cheese that doesn’t melt smoothly.
Also, resist the urge to stir too frequently or lift the lid, as this can lower the temperature and affect the cooking time. Finally, ensure the lobster is fully heated through to a safe temperature.
How to tell it’s done
The dish is done when the cheese is fully melted and the sauce is creamy and bubbling around the edges. The internal temperature of the lobster should reach 145°F (63°C) to ensure it is heated through.
The pasta should be tender but not mushy, and the overall texture should be rich and spoonable. The topping should be golden and crisp.
- Shellfish: 145°F (63°C) in the thickest part
Up next · Part 3 of 3
4 variations · storage & make-ahead · 5 answers · printable card
Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)