Thaw lobster tails completely if frozen

Preheat grill to medium-high heat

Use kitchen shears to cut the top shell lengthwise down the center

Loosen the meat from the shell and lift it slightly on top

Brush lobster meat with melted butter or oil

Season with salt and pepper

Lightly oil the grill grates

Place lobster tails shell-side down on the grill

Close the lid and grill for 5 to 8 minutes

Baste with butter while grilling if desired

Cook until the meat is opaque and firm

Check that the internal temperature reaches 140°F to 145°F

Remove from the grill

Serve immediately with lemon and melted butter