Instructions
Step 1
Position a rack in the center of the oven and preheat to 400°F.
Step 2
On a large cutting board, place the lobster with its legs facing up. Position a sharp knife lengthwise along the center of the belly and tail, then cut down firmly and swiftly all the way through. Remove the sac (or stomach), which is behind where the feelers attach, as well as any trail running the length of the tail. Carefully cut off the two claws where they meet the carapace, remove any rubber bands, and, using a lobster cracker or the flat side of a meat tenderizer, crack the claw shells.
Step 3
Transfer the lobster halves, cut side up, to a rimmed baking sheet or shallow baking dish. Tuck the claws beside the body, then drizzle the olive oil evenly over the lobster. Roast until the shell turns deep red, 12–14 minutes.
Step 4
Meanwhile, in a large skillet set over medium heat, melt the butter. When the foam begins to subside, stir in the shallots and cook, stirring occasionally, until slightly translucent, about 2 minutes. Stir in the white wine, lemon juice, parsley, and tarragon, remove from the heat, and season to taste with salt and black pepper. Transfer the lobster to a serving platter, drizzle the hot pan sauce evenly over top, and serve immediately.