Name: Baked Crab Legs in Butter Sauce Recipe
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Ingredients: 2 pounds crab legs, thawed if frozen; 1/2 cup unsalted butter, melted; 4 cloves garlic, minced; 1 tablespoon fresh lemon juice; 1 teaspoon lemon zest; 1/2 teaspoon paprika; 1/4 teaspoon crushed red pepper flakes; 1/2 teaspoon salt; 1/4 teaspoon black pepper; 2 tablespoons fresh parsley, chopped; 1 whole lemon, cut into wedges, for serving

Baked Crab Legs in Butter Sauce Recipe tastes rich, garlicky, and slightly lemony, with sweet crab meat that pulls right out of the shell. It works perfectly for busy seafood lovers who want a restaurant-style dinner in about 30 minutes from start to finish. I first made this on a Tuesday in sweatpants, so you definitely do not need a special occasion.

Why You Should Try This Baked Crab Legs in Butter Sauce Recipe

This baked crab legs in butter sauce recipe gives you all the flavor of a seafood restaurant without the price tag or the tiny bib. The oven does most of the work while the butter, garlic, and lemon soak into every crack of the shell.

You skip the big pot of boiling water and the mess on the stovetop. Cleanup stays simple, and you still get juicy crab meat that tastes luxurious and comforting.

“This baked crab legs in butter sauce recipe tasted like a fancy seafood night at home, but I had it on the table in under 30 minutes. ★★★★★”

Ingredients You’ll Need

Crab

2 to 3 pounds crab legs (snow crab or king crab both work well)
- Snow crab legs cost less and fit on a sheet pan more easily.
- King crab legs taste slightly richer and meatier, so they feel more special.

Butter sauce

1 cup unsalted butter, melted (2 sticks; use a good quality butter since it carries the flavor)
4 to 6 cloves garlic, finely minced or grated
1 tablespoon fresh lemon zest
2 to 3 tablespoons fresh lemon juice
1 teaspoon Old Bay seasoning or similar seafood seasoning blend
1 teaspoon paprika (smoked or sweet, your choice)
1 teaspoon onion powder
1 teaspoon dried parsley or 1 tablespoon finely chopped fresh parsley
½ teaspoon crushed red pepper flakes (optional, for a little heat)
½ to 1 teaspoon kosher salt, to taste
½ teaspoon black pepper, freshly ground

Optional flavor boosters

1 teaspoon Dijon mustard, for a slight tang in the butter sauce
1 teaspoon hot sauce, if you like a spicy kick
1 tablespoon grated Parmesan, for a richer, slightly nutty finish

Garnishes

Extra lemon wedges, for serving
Extra chopped fresh parsley or chives

Pantry shortcuts and substitutions

Use frozen crab legs that you thaw in the fridge overnight or under cold running water. They usually come pre-cooked, so you only need to heat and flavor them.
Use jarred minced garlic if you need a shortcut, though fresh garlic gives better flavor.
If you run out of Old Bay, mix a quick blend: a pinch each of paprika, celery salt, garlic powder, onion powder, and black pepper.

Equipment list

Large rimmed baking sheet (line with foil for easier cleanup)
Kitchen shears or a sharp knife, to cut shells
Small saucepan or microwave-safe bowl, to melt butter and mix sauce
Silicone brush or spoon, to coat crab legs with butter sauce
Tongs, to turn and serve the crab legs
Small dipping bowls, for extra butter sauce at the table

Tips & Tricks

Pat the crab legs dry with paper towels so the butter sauce clings better.
Snip along the shell with kitchen shears before baking to help the butter soak in and to make cracking easier at the table.
Use heavy-duty foil on the baking sheet so cleanup stays quick and painless.
Do not overbake; most pre-cooked crab legs only need 12 to 15 minutes in a hot oven.
Warm the butter sauce gently so the garlic softens but does not burn.
Taste the butter sauce before you pour it on and adjust salt, lemon, and spice to your liking.
Keep a small bowl for discarded shells at the table so the eating area stays neat.
Serve extra melted butter on the side for serious butter fans.

How to Make Baked Crab Legs in Butter Sauce Recipe

Step 1: Prep the crab legs

Preheat your oven to 400°F and line a large rimmed baking sheet with foil. Arrange the crab legs in a single layer on the pan, bending the joints slightly so they fit. Use kitchen shears to cut along the length of the shells on the top side, which helps the butter reach the meat and makes eating easier later.

If the crab legs still feel slightly icy, run them under cold water and pat them dry. Dry crab legs take on flavor better and do not steam as much.

Step 2: Mix the butter sauce

Melt the butter in a small saucepan over low heat or in a microwave-safe bowl in short bursts. Add the minced garlic, lemon zest, lemon juice, Old Bay, paprika, onion powder, parsley, crushed red pepper flakes, salt, and black pepper. Stir until everything combines and the kitchen starts to smell like a seafood restaurant in the best way.

Taste a tiny spoonful and adjust seasoning. Add more lemon for brightness, more salt for punch, or a dash of hot sauce if you like heat.

Step 3: Coat the crab legs

Spoon or brush the butter sauce generously over the crab legs. Make sure you coat the cut sides of the shells so the sauce drips inside. Reserve about ¼ cup of the butter sauce in a separate bowl for serving.

Tuck a few lemon wedges around the crab legs on the pan if you like extra roasted lemon flavor. They caramelize slightly in the oven and taste great squeezed over the finished crab.

Step 4: Bake the crab legs

Place the baking sheet in the preheated oven and bake for 12 to 15 minutes. The crab legs will heat through, and the butter sauce will bubble and thicken slightly. If you use very large king crab legs, add a couple of extra minutes.

Halfway through the baking time, open the oven and spoon some of the butter from the pan back over the crab legs. This quick baste keeps them juicy and flavorful.

Step 5: Finish and garnish

Remove the pan from the oven and let the crab legs rest for 2 to 3 minutes so the hot butter settles. Transfer the crab legs to a serving platter or keep them right on the foil-lined pan for a more casual setup. Drizzle any remaining pan juices over the top.

Sprinkle with extra parsley or chives and add fresh lemon wedges around the edges. Warm the reserved butter sauce and pour it into small bowls for dipping.

Step 6: Serve and enjoy

Set out crab crackers or more kitchen shears, plus a bowl for shells and plenty of napkins. Encourage everyone to crack into the shells while the crab still feels hot and buttery. Dip each bite into the extra butter sauce and squeeze on more lemon if you like a brighter flavor.

I usually stand at the counter and “taste test” at least two legs before I sit down, so consider that step optional but highly recommended.

What to Serve with Baked Crab Legs in Butter Sauce Recipe

Serve baked crab legs in butter sauce with simple sides that let the seafood shine. Steamed or roasted vegetables like asparagus, green beans, or broccoli balance the richness nicely. A fluffy baked potato, garlic mashed potatoes, or warm crusty bread works great to soak up extra butter sauce.

You can also add a crisp salad with romaine, cucumber, and a light vinaigrette to cut through the richness. For drinks, pair with iced tea, sparkling water with lemon, or a citrusy mocktail.

Storage Options

Store leftover crab legs in an airtight container in the fridge for up to 2 days.
Keep extra butter sauce in a small sealed container in the fridge for up to 4 days.
Reheat crab legs gently in a covered baking dish at 300°F with a splash of water or extra butter until warm, about 10 to 12 minutes.
Freeze leftover crab meat (removed from the shells) in a freezer bag for up to 2 months, then use it in crab pasta, crab omelets, or seafood salads.