1) Cut crab legs into 2-1/2 to 3 inch pieces.
2) Melt butter in 10 inch round or 8 x 8 x 2 inch microwave proof dish at high about 30 seconds; add mushrooms, green onion, sherry and lemon juice. Cover with waxed paper.
3)Microwave at high 2 minutes; rotate dish 1/4 turn after 1 minute. Add crab legs, meat-side down; cover with waxed paper. Microwave at medium 3 to 4 minutes or until thoroughly heated; rotate dish 1/4 turn after 1-1/2 minutes.
-12 oz. Alaska King crab split legs, thawed if necessary
-3 tbsp. butter or margarine
-1 cup sliced fresh mushrooms
-2 tbsp. chopped green onion
-1 to 2 tbsp. dry sherry or dry vermouth
-1 tbsp. lemon juice