Mom's Best Recipes
Recipe

Garlic Butter Baked Crab Legs

King or snow crab legs baked or broiled with lemony garlic butter, lightly roasty edges, and a simple dipping sauce. Weeknight-easy, dinner party worthy.

Author By Matt Campbell
4.9
A real photograph of king crab legs on a foil-lined sheet pan fresh from the oven, brushed with glossy garlic butter, with lemon wedges and chopped parsley nearby
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If you have ever looked at crab legs at the store and thought, this feels like restaurant food, I get it. But here is the secret: king and snow crab legs are almost always already cooked before they are frozen. Our job at home is basically to reheat gently and make sure every bite gets hit with buttery garlic, lemon, and a little salty sparkle.

This is my favorite low-drama method for Garlic Butter Baked Crab Legs, with an oven option for hands-off cozy vibes and a broiler option when you want those little browned edges (briefly, so we do not dry anything out). We will also do clarified garlic butter so the sauce stays silky and does not break into a greasy puddle. Taste as you go. Dip aggressively.

A real photograph of a small bowl of clarified garlic butter with minced garlic and lemon zest on a kitchen counter, with a whisk and lemon halves in the background

Why It Works

  • Big flavor, minimal effort: clarified garlic butter coats the meat and gets right into the cuts as it warms.
  • Flexible cook methods: bake for even heat or broil for fast browning.
  • A simple timing guide: a quick reference by size so you are less likely to overcook and dry the crab.
  • Easier eating: split shells before baking so the meat comes out more easily.

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Storage Tips

Best case: crab is at its peak right after cooking. But if you have leftovers, do this (and refrigerate promptly).

  • Refrigerate: pull the meat from the shells (easier while it is still a little warm), store airtight, and refrigerate up to 2 days.
  • Keep the butter chilled: store leftover garlic butter in a sealed container in the refrigerator up to 5 days. Rewarm gently. Do not leave garlic butter sitting out.
  • Reheat gently: warm crab meat in a covered skillet with a splash of water or a spoon of butter over low heat just until heated through. Avoid microwaving if you can. It turns crab rubbery fast.
  • Do not refreeze: especially if your crab legs were previously frozen.

Leftover move: toss crab meat with warm butter, lemon, and a handful of pasta, or fold into scrambled eggs with chives.

Common Questions

Are crab legs already cooked?

In most U.S. grocery stores, king and snow crab legs are almost always pre-cooked and flash frozen. That means you are reheating. Raw crab legs exist at some specialty markets, so if yours are labeled raw, cook times will be longer and you must fully cook the meat.

Do I need to thaw crab legs first?

No, but it helps them heat evenly. If you have time, thaw overnight in the fridge. If not, rinse under cool running water for a few minutes to knock off ice glaze, then bake covered and plan to add time in small increments.

How do I know when they are done?

They are done when the meat is steaming hot all the way through and the shells are very warm to the touch. Since they are usually pre-cooked, the goal is heat, not “doneness.” If you use an instant-read thermometer, aim for about 145°F in the thickest part of the meat.

Why clarified butter?

Clarified butter removes milk solids and water, so it is less likely to separate and it handles higher heat better. Translation: a cleaner, silkier dipping sauce and better broiler results.

Can I use salted butter?

Yes. Just taste before adding extra salt. Crab is naturally salty, and some brands are saltier than others.

What is the easiest way to split crab leg shells?

Kitchen shears. Cut down the length of the shell, then gently pry it open. I also like to crack the knuckles with the back of a spoon so the butter can get in there.

Any food safety tips?

Seafood is best served right away. Do not leave crab legs out at room temperature for more than 2 hours (less if it is very warm in your kitchen). Refrigerate leftovers promptly.

Crab legs are my favorite kind of “fancy” because they are secretly low effort. The first time I made them at home, I overcomplicated everything and still ended up with lukewarm crab and butter that looked like it had trust issues. Now I do it the simple way: clarified garlic butter, a hot oven, and shells split just enough to let the flavor sneak in. It is relaxed cooking with a big payoff, which is exactly my kind of kitchen energy.