Many supermarket crab legs are already cooked and frozen. They need gentle reheating, while raw crab needs a full cook. Read the package rather than judging only by shell color.
For thawed commercially cooked crab legs, steam in a covered pot above simmering water until heated through, following package guidance. Crack carefully and remove shell fragments before eating.
Go straight to the stepsYour project helper
Follow the steps and check them off as you go →Before you begin
Confirm the package’s cooked/raw status and thawing instructions. Shell edges can be sharp. Keep hands away from escaping steam and avoid overfilling the pot.
What you’ll need
- Large covered pot
- Steamer insert
- Tongs
- Crab crackers and seafood picks
- Food thermometer
Measure before you start
Ingredients
Base batch: 2 portions
Ingredient amounts scale; oven temperatures and cooking times do not. Split a larger batch between pans when needed.
Use the base batch for your first attempt. Adjust seasoning to taste and check texture as you cook.
Let’s do this
Step by step
- 01
Read and thaw
Thaw in the refrigerator as directed, keeping drips contained. If the product is raw, use its full cooking instructions rather than the reheating estimate below.
- 02
Prepare the steamer
Add water below the steamer basket so it does not submerge the crab. Bring to a simmer. Bend legs at natural joints if needed to fit without force.
- 03
Steam covered
Arrange legs in the basket, cover and steam until heated through. Thawed cooked legs often take around 5–8 minutes, but size and package directions control. Reheated leftovers should reach 165°F.
- 04
Open away from steam
Turn off heat and lift the lid away from your face. Remove legs with tongs to a clean tray. Let them cool just enough to handle safely.
- 05
Crack and inspect
Use crackers at the shell joints and lift meat with a pick. Work over a tray and check for sharp shell fragments. Serve with optional butter and lemon.
Checks stay on this page while you work and reset when you leave.
Do not turn every product into the same recipe
King crab, snow crab and raw clusters can require different handling. Keep the label until the meal is finished so the cooking method stays tied to the actual product.
Serve now or store safely
Refrigerate perishable cooked food in shallow containers within 2 hours, or within 1 hour when the room or outdoor temperature is above 90°F. Keep the refrigerator at 40°F or below. Use most cooked leftovers within 3–4 days and reheat to 165°F. Do not wait for a large pot to cool completely on the counter.
A quick final check
- Read and thaw
- Prepare the steamer
- Steam covered
- Open away from steam
- Crack and inspect
Common questions & sticking points
Can I put them directly in water?
Boiling is another method, but this guide steams above the water. Avoid mixing the two timings.
Are orange shells proof they are cooked?
Read the label. Appearance alone is not a dependable way to identify processing status.
Sources & further reading Optional
References used to check this guide. Follow your product’s own safety instructions where its design differs.
Last source check: September 24, 2026
