Jumbo Lump Crab Au Gratin Recipe
Introduction
Jumbo Lump Crab Au Gratin is a rich and creamy seafood dish that highlights delicate crab meat baked under a golden, cheesy crust. Perfect as an elegant appetizer or a satisfying main course, this recipe combines classic flavors with a smooth, velvety sauce.

Ingredients
- 1 pound jumbo lump crab meat
- 2 tablespoons unsalted butter
- 2 tablespoons all-purpose flour
- 1 cup whole milk
- 1 cup heavy cream
- 1 teaspoon Dijon mustard
- 1 teaspoon Worcestershire sauce
- 1 teaspoon Old Bay seasoning
- ½ teaspoon garlic powder
- ½ teaspoon onion powder
- Salt and black pepper to taste
- 1 cup shredded sharp cheddar cheese
- ½ cup breadcrumbs
- 2 tablespoons chopped fresh parsley (for garnish)
Instructions
- Step 1: Preheat your oven to 375°F (190°C).
- Step 2: Carefully check the crab meat for any shells and set it aside.
- Step 3: In a medium pan, melt the butter over medium heat. Add the flour and whisk continuously for about 1 minute until golden.
- Step 4: Gradually whisk in the milk and heavy cream, stirring until the mixture is smooth and thickened, about 3-4 minutes.
- Step 5: Stir in the Dijon mustard, Worcestershire sauce, Old Bay seasoning, garlic powder, onion powder, salt, and pepper. Mix well to incorporate the flavors.
- Step 6: Remove the saucepan from heat and fold in ¾ cup of the shredded cheddar cheese until melted and smooth.
- Step 7: Gently fold the jumbo lump crab meat into the cheese mixture, taking care not to break up the crab.
- Step 8: Pour the mixture into a greased baking dish.
- Step 9: In a small bowl, combine the breadcrumbs with the remaining ¼ cup of cheese. Sprinkle this mixture evenly over the crab mixture.
- Step 10: Bake for 25-30 minutes until the top is golden and bubbly.
- Step 11: Remove from the oven, garnish with chopped fresh parsley if desired, and serve hot.
Tips & Variations
- Use fresh crab meat when possible for the best flavor, but good quality canned crab can work in a pinch.
- For a richer sauce, substitute half the milk with additional heavy cream.
- Add a pinch of cayenne pepper or smoked paprika for a subtle spicy kick.
- Top with panko breadcrumbs for a crispier crust.
Storage
Store leftover crab au gratin in an airtight container in the refrigerator for up to 2 days. Reheat gently in the oven at 325°F (160°C) until warmed through to maintain the creamy texture and avoid overcooking the crab.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I prepare this dish ahead of time?
Yes, you can assemble the dish up to the baking step and refrigerate it uncovered for a few hours. Bake just before serving to ensure a fresh, bubbly topping.
What can I serve with Jumbo Lump Crab Au Gratin?
This dish pairs well with simple sides like steamed vegetables, a light salad, or crusty bread to soak up the creamy sauce.
PrintJumbo Lump Crab Au Gratin Recipe
Jumbo Lump Crab Au Gratin is a decadent seafood dish featuring tender jumbo lump crab meat baked in a rich, creamy cheese sauce topped with a golden, crispy breadcrumb crust. Perfect as an elegant appetizer or a main course, this recipe combines classic French au gratin technique with the delicate flavors of fresh crab, enhanced by a blend of spices and sharp cheddar cheese.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 4 servings 1x
- Category: Appetizer
- Method: Baking
- Cuisine: American
Ingredients
Crab and Dairy
- 1 pound jumbo lump crab meat
- 1 cup whole milk
- 1 cup heavy cream
- 1 cup shredded sharp cheddar cheese (divided into ¾ cup and ¼ cup)
- 2 tablespoons unsalted butter
Dry Ingredients and Seasonings
- 2 tablespoons all-purpose flour
- 1 teaspoon Dijon mustard
- 1 teaspoon Worcestershire sauce
- 1 teaspoon Old Bay seasoning
- ½ teaspoon garlic powder
- ½ teaspoon onion powder
- Salt and black pepper to taste
- ½ cup breadcrumbs
Garnish
- 2 tablespoons chopped fresh parsley
Instructions
- Preheat Oven: Begin by preheating your oven to 375°F (190°C) to prepare for baking the crab au gratin.
- Prepare Crab: Carefully inspect the jumbo lump crab meat for any stray shells and set the meat aside for use in the recipe.
- Make the Roux: In a medium saucepan, melt the unsalted butter over medium heat. Add the all-purpose flour and whisk continuously for about 1 minute until the mixture turns golden and forms a smooth paste.
- Add Milk and Cream: Gradually whisk in the whole milk and heavy cream, stirring constantly until the sauce thickens and becomes smooth, which should take about 3 to 4 minutes.
- Season the Mixture: Stir in the Dijon mustard, Worcestershire sauce, Old Bay seasoning, garlic powder, onion powder, salt, and black pepper to taste. Mix thoroughly to evenly incorporate all the flavors.
- Add Cheese: Remove the saucepan from heat and fold in ¾ cup of the shredded sharp cheddar cheese until fully melted and the sauce is smooth and creamy.
- Combine with Crab: Gently fold the jumbo lump crab meat into the cheese sauce mixture, taking care not to break up the crab lumps to maintain their integrity.
- Transfer to Baking Dish: Pour the crab and cheese mixture into a greased baking dish, spreading it out evenly.
- Prepare Topping: In a small bowl, combine the remaining ¼ cup of shredded cheddar cheese with the ½ cup of breadcrumbs. Sprinkle this mixture evenly over the surface of the crab mixture in the baking dish.
- Bake: Place the dish in the preheated oven and bake for 25 to 30 minutes, or until the topping is golden brown and bubbly, indicating the dish is cooked through.
- Garnish and Serve: Remove the au gratin from the oven, garnish with the freshly chopped parsley, and serve hot as a luxurious starter or main dish.
Notes
- Be careful to pick through the crab meat for shells to ensure a pleasant eating experience.
- The Dijon mustard and Worcestershire sauce add depth to the cheesy sauce but can be adjusted to taste or omitted for a milder flavor.
- For a gluten-free version, substitute all-purpose flour and breadcrumbs with gluten-free alternatives.
- The dish is best served immediately while hot and bubbly for optimal texture and flavor.
- Leftovers can be refrigerated and gently reheated, though the topping may lose some crispiness.
Keywords: crab au gratin, jumbo lump crab, seafood gratin, baked crab recipe, cheesy crab dish, appetizer, American seafood

