If you are looking for an elegant baked pasta dinner with rich seafood flavor, these Garlic Butter Crab Stuffed Shells are a delicious choice. Jumbo pasta shells are filled with a creamy mixture of crab meat, ricotta, mozzarella, Parmesan, garlic, herbs, and lemon, then baked in a silky garlic butter cream sauce until bubbly and golden.
The crab keeps the filling delicate and slightly sweet, while garlic butter, Parmesan, and lemon add savory richness and brightness. The sauce is creamy enough to keep the pasta tender without overwhelming the seafood.
These stuffed shells are perfect for date night, holidays, family dinners, or whenever you want a seafood pasta bake that feels special but is still approachable.
Why You’ll Love These Garlic Butter Crab Stuffed Shells
The crab filling is creamy, cheesy, and full of seafood flavor.
Garlic butter adds richness without covering up the sweetness of the crab.
Lemon and fresh herbs keep the dish from feeling too heavy.
The shells can be assembled ahead of time and baked just before serving.
You can also customize the recipe with shrimp, spinach, lobster, or extra Parmesan.
Ingredients
For the Pasta Shells
- 20–24 jumbo pasta shells
- Salt for the pasta water
- 1 teaspoon olive oil, optional
For the Crab Filling
- 1 pound lump crab meat, drained and carefully checked for shell pieces
- 15 ounces ricotta cheese
- 1 cup shredded low-moisture mozzarella cheese
- ¾ cup freshly grated Parmesan cheese
- 1 large egg
- 3 garlic cloves, finely minced
- 2 tablespoons chopped fresh parsley
- 1 tablespoon chopped fresh chives
- 1 tablespoon fresh lemon juice
- 1 teaspoon lemon zest
- ½ teaspoon Old Bay seasoning
- ½ teaspoon garlic powder
- ¼ teaspoon onion powder
- ¼ teaspoon freshly ground black pepper
- ¼ teaspoon red pepper flakes, optional
- Salt to taste
For the Garlic Butter Cream Sauce
- 4 tablespoons unsalted butter
- 5 garlic cloves, finely minced
- 3 tablespoons all-purpose flour
- 1½ cups low-sodium seafood or chicken broth
- 1½ cups whole milk
- ½ cup heavy cream
- 1 teaspoon Dijon mustard
- ½ teaspoon Old Bay seasoning
- ½ teaspoon garlic powder
- ½ teaspoon Italian seasoning
- ¼ teaspoon freshly ground black pepper
- ¾ cup freshly grated Parmesan cheese
- 1 tablespoon fresh lemon juice
For the Cheese Topping
- 1½ cups shredded mozzarella cheese
- ½ cup freshly grated Parmesan cheese
Optional Toppings
- Extra lump crab meat
- Fresh parsley
- Fresh chives
- Lemon zest
- Red pepper flakes
- Freshly cracked black pepper
How to Make Garlic Butter Crab Stuffed Shells
1. Preheat the Oven
Preheat your oven to 375°F (190°C).
Lightly grease a 9×13-inch baking dish.
2. Bring the Pasta Water to a Boil
Fill a large pot with water.
Season generously with salt and bring to a rolling boil.
3. Cook the Jumbo Shells
Add the shells.
Cook approximately 2 minutes less than the package directions.
They should be flexible enough to stuff but still slightly firm.
4. Drain the Shells
Drain carefully.
Rinse briefly with cool water so they are easier to handle.
Arrange them individually on a baking sheet or tray so they do not stick together.
5. Prepare the Crab
Place the crab meat in a bowl.
Check carefully for any remaining pieces of shell or cartilage.
Drain away excess liquid.
6. Make the Crab Filling
In a large bowl, combine:
- Crab meat
- Ricotta
- Mozzarella
- Parmesan
- Egg
- Garlic
- Parsley
- Chives
- Lemon juice
- Lemon zest
- Old Bay
- Garlic powder
- Onion powder
- Black pepper
- Red pepper flakes, if using
7. Fold Gently
Mix gently so you do not break the crab into tiny pieces.
The filling should remain thick and creamy.
8. Taste Carefully
Because the filling contains raw egg, do not taste the fully mixed filling directly.
Instead, season conservatively and adjust the finished sauce later if needed.
9. Melt the Butter
Place a large saucepan over medium heat.
Add the butter.
10. Add the Garlic
Stir in the minced garlic.
Cook for approximately 30 seconds, just until fragrant.
11. Add the Flour
Whisk in the flour.
Cook for approximately 1–2 minutes.
12. Add the Broth
Slowly pour in the seafood or chicken broth while whisking constantly.
13. Add the Milk
Gradually pour in the milk.
Continue whisking until smooth.
14. Add the Cream
Stir in the heavy cream.
15. Season the Sauce
Add:
- Dijon mustard
- Old Bay
- Garlic powder
- Italian seasoning
- Black pepper
16. Simmer
Cook over medium-low heat for approximately 4–6 minutes, stirring frequently.
The sauce should begin thickening but remain pourable.
17. Add Parmesan
Reduce the heat to low.
Add the Parmesan gradually.
Stir until melted and smooth.
18. Add Lemon Juice
Stir in the fresh lemon juice.
Taste and adjust seasoning.
19. Check the Sauce Consistency
The sauce should be slightly loose because it will thicken in the oven.
If necessary, add a splash of milk or broth.
20. Add Sauce to the Baking Dish
Spread approximately 1½ cups garlic butter cream sauce across the bottom of the baking dish.
21. Fill the Shells
Spoon approximately 2 tablespoons crab filling into each shell.
Do not overfill.
22. Arrange the Shells
Place the stuffed shells open-side up in the prepared baking dish.
Arrange them fairly close together.
23. Add Remaining Sauce
Spoon the remaining garlic butter sauce over and around the shells.
Try to coat exposed pasta lightly so it does not dry out.
24. Add Mozzarella
Sprinkle shredded mozzarella evenly over the top.
25. Add Parmesan
Finish with grated Parmesan.
26. Cover
Cover the baking dish loosely with foil.
27. Bake Covered
Bake for approximately 20 minutes.
28. Remove the Foil
Carefully uncover the baking dish.
29. Continue Baking
Bake for another 10–15 minutes.
The sauce should be bubbling and the cheese fully melted.
30. Check the Filling
The center should be hot throughout.
If using a thermometer, aim for at least 165°F (74°C) in the center because the filling contains egg.
31. Broil for Extra Browning
For a golden top, broil for approximately 1–2 minutes.
Watch carefully.
32. Rest
Remove the casserole from the oven.
Let it rest for approximately 5–10 minutes.
33. Garnish
Finish with:
- Fresh parsley
- Chives
- Lemon zest
- Extra Parmesan
- Red pepper flakes
34. Serve
Serve warm with extra garlic butter sauce spooned over the shells.
What to Serve With Garlic Butter Crab Stuffed Shells
These shells are rich, so lighter sides work especially well.
Try:
- Caesar salad
- Arugula salad
- Garden salad
- Garlic asparagus
- Roasted broccoli
- Green beans
- Roasted zucchini
For bread, serve with:
- Garlic bread
- Cheesy garlic herb bread
- Focaccia
- Crusty Italian bread
For a seafood dinner, pair them with:
- Garlic shrimp
- Seared scallops
- Calamari
- Roasted salmon
Tips for the Best Garlic Butter Crab Stuffed Shells
Use Good-Quality Crab Meat
Lump or jumbo lump crab gives the best texture.
Check for Shell Pieces
Even packaged crab can contain small shell fragments.
Don’t Overmix
Fold the filling gently to preserve the crab pieces.
Cook the Pasta Slightly Under
The shells continue cooking in the oven.
Keep the Sauce Slightly Loose
The pasta absorbs some liquid while baking.
Use Freshly Grated Parmesan
It melts more smoothly into the sauce.
Add Lemon
A little lemon brightens the rich garlic butter and cheese.
Cover First, Then Uncover
Covered baking keeps the shells moist, while uncovering allows the cheese to brown.
Easy Recipe Variations
Garlic Butter Shrimp & Crab Stuffed Shells
Add ½ pound cooked chopped shrimp to the crab filling.
Lobster Crab Stuffed Shells
Replace part of the crab with chopped cooked lobster meat.
Spinach Crab Stuffed Shells
Add 1 cup cooked spinach, squeezed very dry.
Three-Cheese Crab Shells
Use:
- Ricotta
- Mozzarella
- Parmesan
- Provolone
Spicy Crab Stuffed Shells
Add:
- Extra red pepper flakes
- Cayenne
- Pepper Jack cheese
Creamy Cajun Crab Shells
Replace the Old Bay with Cajun seasoning and add a pinch of cayenne.
Crab Alfredo Stuffed Shells
Make the sauce even richer by increasing the heavy cream and Parmesan.
Tomato Cream Crab Shells
Stir ½ cup marinara sauce into the garlic cream sauce for a blush-style sauce.
How to Store Leftovers
Allow leftovers to cool before transferring them to an airtight container.
Refrigerate for up to 3 days.
Seafood dishes are best enjoyed sooner rather than later.
Reheating in the Oven
Place the shells in a covered baking dish.
Add a splash of milk or broth.
Reheat at 350°F (175°C) until hot.
Reheating in the Microwave
Microwave individual portions in short intervals.
Cover loosely and add a spoonful of sauce if needed.
Freezing
These stuffed shells can be frozen, although the crab and cream sauce will have the best texture when freshly prepared.
For best results, assemble the shells but do not bake them.
Cover tightly and freeze for up to approximately 1–2 months.
Thaw overnight in the refrigerator before baking.
You may need to add a few extra minutes to the covered baking time.
Frequently Asked Questions
Can I use imitation crab?
Yes, but real lump crab provides better texture and seafood flavor.
Can I use canned crab?
Yes. Drain it very well and check carefully for shell pieces.
Can I use frozen crab?
Yes. Thaw completely and remove excess moisture before mixing.
Can I make these ahead?
Absolutely. Assemble up to a day ahead, cover, and refrigerate until ready to bake.
Can I add shrimp?
Yes. Chopped cooked shrimp is an excellent addition.
Why is my filling watery?
The crab or ricotta may contain excess moisture. Drain both well before mixing.
Can I use jarred Alfredo sauce?
Yes. Use approximately 3–4 cups Alfredo sauce as a shortcut.
How do I keep the shells from drying out?
Slightly undercook the pasta, cover the shells with sauce, and bake covered during the first portion of cooking.
Final Thoughts
These Garlic Butter Crab Stuffed Shells combine tender jumbo pasta, sweet lump crab, ricotta, mozzarella, Parmesan, fresh garlic, herbs, lemon, and a creamy garlic butter sauce in one elegant seafood pasta bake.
The key is keeping the crab filling thick, slightly undercooking the shells, leaving the cream sauce a little loose before baking, and adding just enough lemon to balance the richness.
Serve them with garlic bread, roasted vegetables, or a crisp salad for a comforting seafood dinner that is creamy, garlicky, cheesy, and packed with tender crab in every shell.