Keto Garlic Butter Crab Legs

Featured in: Cozy Weeknight Meals

These succulent king crab legs deliver restaurant-quality elegance with minimal effort. The legs are brushed with a luxurious garlic butter infused with smoked paprika and optional red pepper flakes, then baked until perfectly heated through. Fresh parsley adds vibrant color while lemon wedges provide a bright, acidic contrast that cuts through the rich butter.

Ready in just 20 minutes with only 10 minutes of active preparation, this dish impresses guests or elevates a weeknight dinner. The naturally sweet, tender crab meat pairs beautifully with the savory, aromatic butter sauce. Perfect for special occasions or whenever you crave upscale seafood without the fuss.

Updated on Wed, 11 Feb 2026 14:42:53 GMT
Freshly baked Keto Garlic Butter Crab Legs dripping with garlicky butter on a platter with lemon wedges. Save
Freshly baked Keto Garlic Butter Crab Legs dripping with garlicky butter on a platter with lemon wedges. | blipbite.com

Succulent crab legs smothered in a rich garlic butter sauce, served with fresh lemon wedges for a vibrant, keto-friendly seafood dish. This easy American main dish brings restaurant-style luxury to your home in just 20 minutes.

Freshly baked Keto Garlic Butter Crab Legs dripping with garlicky butter on a platter with lemon wedges. Save
Freshly baked Keto Garlic Butter Crab Legs dripping with garlicky butter on a platter with lemon wedges. | blipbite.com

Using king crab legs provides a meaty and satisfying experience, while the infusion of smoked paprika and minced garlic into the butter creates a savory glaze that perfectly complements the sweet seafood meat.

Ingredients

  • Seafood: 1.5 lbs (680 g) king crab legs, thawed if frozen
  • Garlic Butter Sauce: 6 tbsp (85 g) unsalted butter, 4 cloves garlic (minced), 1 tbsp fresh parsley (finely chopped), 1/2 tsp smoked paprika, 1/4 tsp crushed red pepper flakes (optional), 1/2 tsp sea salt, 1/4 tsp freshly ground black pepper
  • To Serve: 1 large lemon (cut into wedges), 2 tbsp fresh parsley (chopped for garnish)
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Instructions

1
Preheat oven to 400°F (200°C). Line a baking sheet with foil for easy cleanup.
2
Place the crab legs on the prepared baking sheet.
3
In a small saucepan over medium heat, melt the butter. Add the minced garlic and sauté for 1–2 minutes, until fragrant but not browned. Stir in 1 tbsp parsley, smoked paprika, red pepper flakes (if using), salt, and black pepper.
4
Brush the garlic butter generously over the crab legs, reserving a little for serving.
5
Bake the crab legs for 8–10 minutes, until heated through and the butter is bubbling.
6
Transfer crab legs to a serving platter. Drizzle with reserved garlic butter and sprinkle with fresh parsley.
7
Serve immediately with lemon wedges on the side.

Zusatztipps für die Zubereitung

For extra flavor, steam or grill the crab legs before adding the garlic butter. Using a pastry brush allows you to distribute the sauce evenly into all the crevices of the legs.

Varianten und Anpassungen

Substitute king crab with snow crab if preferred. You can also adjust the spice level by increasing or omitting the crushed red pepper flakes based on your preference.

Serviervorschläge

Pair with a crisp dry white wine such as Sauvignon Blanc. Serve with a side of leafy greens or cauliflower mash for a complete keto meal.

Golden garlic butter glazed Keto Garlic Butter Crab Legs garnished with parsley served alongside vibrant lemon wedges. Save
Golden garlic butter glazed Keto Garlic Butter Crab Legs garnished with parsley served alongside vibrant lemon wedges. | blipbite.com

This nutrient-dense meal provides 28g of protein per serving and just 3g of carbs, making it a powerful choice for anyone following a low-carb or gluten-free lifestyle.

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Kitchen Guide

Can I use frozen crab legs?

Yes, frozen crab legs work perfectly. Thaw them overnight in the refrigerator or run under cool water for 15-20 minutes before cooking. Pat dry before applying the garlic butter for best adhesion.

What's the best way to reheat leftovers?

Gently reheat in a 350°F oven for 5-7 minutes, or steam for 3-4 minutes. Avoid microwaving as it can toughen the delicate meat. Brush with additional butter before reheating to maintain moisture.

Can I substitute other types of crab?

Snow crab legs work wonderfully as an alternative. Adjust cooking time slightly—smaller snow crab legs may need only 6-8 minutes. Dungeness crab is another excellent option with similar cooking requirements.

How do I know when the crab is properly heated?

The shells will feel hot to touch and the meat should be opaque and steaming. The butter sauce will be bubbling around the legs. Avoid overcooking as it can make the meat rubbery.

What sides complement this dish?

Cauliflower mash, sautéed asparagus with garlic, or a crisp green salad with lemon vinaigrette maintain the low-carb theme. For non-keto guests, crusty bread for soaking up the butter sauce works beautifully.

Can I make the garlic butter ahead?

Prepare the butter mixture up to 3 days in advance and store refrigerated. Bring to room temperature before using, or gently warm to liquid consistency for easier brushing over the crab legs.

Keto Garlic Butter Crab Legs

Tender crab legs smothered in rich garlic butter sauce with fresh lemon wedges for an elegant, quick-prep seafood dinner.

Prep duration
10 min
Heat time
10 min
Complete duration
20 min
Created by Megan Lewis


Complexity Easy

Heritage American

Output 4 Portions

Nutrition Guidelines No Gluten, Carb-Conscious

Components

Seafood

01 1.5 lbs king crab legs, thawed if frozen

Garlic Butter Sauce

01 6 tablespoons unsalted butter
02 4 cloves garlic, minced
03 1 tablespoon fresh parsley, finely chopped
04 1/2 teaspoon smoked paprika
05 1/4 teaspoon crushed red pepper flakes
06 1/2 teaspoon sea salt
07 1/4 teaspoon freshly ground black pepper

To Serve

01 1 large lemon, cut into wedges
02 2 tablespoons fresh parsley, chopped for garnish

Method

Phase 01

Prepare oven and baking sheet: Preheat oven to 400°F. Line a baking sheet with aluminum foil for easy cleanup.

Phase 02

Arrange crab legs: Place the crab legs on the prepared baking sheet in a single layer.

Phase 03

Prepare garlic butter sauce: In a small saucepan over medium heat, melt the butter. Add the minced garlic and sauté for 1-2 minutes until fragrant but not browned. Stir in parsley, smoked paprika, red pepper flakes, salt, and black pepper.

Phase 04

Coat crab legs with butter mixture: Brush the garlic butter generously over the crab legs, reserving a portion for serving.

Phase 05

Bake crab legs: Bake for 8-10 minutes until heated through and the butter is bubbling.

Phase 06

Plate and finish: Transfer crab legs to a serving platter. Drizzle with reserved garlic butter and sprinkle with fresh parsley.

Phase 07

Serve: Serve immediately with lemon wedges on the side.

Tools needed

  • Baking sheet
  • Aluminum foil
  • Small saucepan
  • Pastry brush
  • Chef's knife
  • Cutting board

Allergy Details

Review ingredients carefully for potential allergens and seek professional medical guidance if uncertain.
  • Contains shellfish (crab)
  • Contains dairy (butter)

Nutrient breakdown (per portion)

Values shown are estimates and shouldn't replace professional medical consultation.
  • Energy: 320
  • Fats: 21 g
  • Carbohydrates: 3 g
  • Proteins: 28 g