Garlic-Butter Grilled Crab Legs Recipe for Summer Feasts

Simple, perfectly grilled crab legs make a delicious addition to your summer menu—and they take only about 10 minutes to cook. Serve them with an easy garlic-butter sauce for a meal that’s naturally low-carb, keto-friendly, gluten-free, and adaptable for Whole30 or dairy-free diets.

Grilled crab legs, lined up on a baking sheet lined with parchment paper, next to a bowl of garlic butter sauce.

What Makes This Recipe So Good

Grilling crab legs is very easy. Most crab legs are pre-cooked and frozen, so once they’re defrosted you simply grill them until heated through. This method is slightly more hands-on than pressure-cooking, but still fast and straightforward.
The grill adds a deep, smoky flavor to the crab meat that pairs perfectly with a simple butter sauce and fresh herbs.
Nutritious and satisfying: Crab is high in protein, low in carbohydrates, and packed with vitamins and minerals. It’s a great, lighter alternative to beef or chicken for low-carb or keto meals.
Perfect for summer entertaining. While everyone expects burgers and ribs on the grill, serving impressive grilled crab legs will make your meal stand out.

Chef’s Tips

Plan portion sizes carefully. A good rule of thumb is 1½ pounds of crab legs per person if crab is the main protein. That weight refers to legs in their shells, not edible meat.
This recipe uses king crab legs, but the same method and timing work well for Dungeness and snow crab legs, which are often more budget-friendly.
If using frozen crab legs, defrost them fully before grilling. Either thaw overnight in the refrigerator or place sealed legs in cold water for 25–30 minutes. Avoid hot water so you don’t start cooking them prematurely.
Watch the grill closely—overcooking causes tough, rubbery meat. Properly cooked crab legs will be reddish-orange with white, opaque meat. If the meat turns pink, it’s overcooked.

Overhead view of grilled crab legs lined up on a baking sheet lined with parchment paper, next to a small bowl of butter sauce.

Delicious Recipes To Pair With Crab Legs

Instant Pot Cornbread
Chick-Fil-A Style Coleslaw
Roasted Chili Corn Salsa
Southern Smothered Potatoes
Bone-In Ribeye with Garlic-Herb Butter

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Grilled Crab Legs with Garlic-Butter Sauce

Prep: 10 minutes

Cook: 10 minutes

Total: 20 minutes

In about 10 minutes you’ll have tender, smoky crab legs and a bright garlic-butter sauce—an ideal summer dish that’s low carb and easy to adapt to dietary needs.

Sam Guarnieri

2 servings

Ingredients

For the Crab Legs

3 pounds king crab legsdefrosted if frozen

For the Garlic-Butter Sauce

½ cup buttermelted but not boiling
¼ cup chopped fresh parsley
3 cloves garlicminced
1 tablespoon fresh lemon juice
1 pinch saltto taste
1 pinch freshly cracked black pepperto taste

Equipment

Grill
Kitchen scissors
Small bowl
Whisk
Spoon or basting brush

Instructions

Preheat the grill to medium-high, about 375–450°F (190–230°C). Using kitchen scissors, cut lengthwise through the top of each leg shell to expose the meat, but leave the meat in the shell. Set the prepared legs aside.
In a small bowl, whisk together the melted butter, chopped parsley, minced garlic, lemon juice, salt, and pepper until well combined.
Brush or spoon about half of the butter sauce over the exposed crab meat inside the legs. Reserve the remaining sauce for serving.
Place the crab legs on the grill with the split side up. Close the lid and grill over direct heat for about 7 minutes, then check for doneness. Continue grilling as needed until the shells are reddish-orange and the meat is opaque and pearly white, no more than 10 minutes total.
Remove the crab legs from the grill and serve immediately with the reserved garlic-butter sauce and desired sides.

Notes

Some crab legs are sold already split. If yours aren’t, cut them open—this helps the butter and smoke penetrate the meat.
One pound of king crab legs usually yields about ½–¾ pound of edible meat. If crab is your main protein, plan for about 1½ pounds of legs per person; as a side, 1 pound per person is often sufficient.
Dungeness and snow crab legs can be substituted; follow the same instructions and timing.
To make this Whole30 or paleo, substitute ghee for butter.
To make it dairy-free, use a plant-based butter alternative.

Nutrition Information

Serving: 1serving
|
Calories: 791kcal
|
Protein: 76g
|
Fat: 55g

Serving counts and nutritional estimates are approximate and will vary with ingredient brands and portion sizes.