Preheat your grill to medium.Split the shells of 3 pounds of crab legs and place them on a baking sheet split-side up.
Combine the ingredients to make garlic butter sauce in a bowl using a spoon. Use melted butter so you have a sauce.
Gently spoon the garlic butter over the meat of the crab legs. Reserve additional butter for serving after grilling crab legs.
Place the split crab legs on the grill, shell-side down. Close the lid and grill for approximately 10 minutes or until the crab is cooked through. Crab leg meat is cooked when it is reddish-orange and opaque.
Remove from the grill and serve with the delicious garlic butter sauce and fresh lemon wedges. Enjoy!
Make sure to reserve additional garlic butter after spooning it onto the crab meat so you have extra to serve the grilled king crab legs with when they’re done grilling. It is just so flavorful!