America's Test Kitchen LogoCook's Country LogoCook's Illustrated LogoAmerica's Test Kitchen LogoCook's Country LogoCook's Illustrated Logo

Roasted Oysters on the Half Shell with Shallot and Tarragon for Two

By Lan Lam & Julia Collin Davison

Published on July 19, 2025

Time

50 minutes

Yield

Serves 2

Roasted Oysters on the Half Shell with Shallot and Tarragon for Two

Ingredients

6 oysters, 2½ to 3 inches long, well scrubbed2 tablespoons unsalted butter, softened 1 tablespoon minced shallot 1 tablespoon minced fresh tarragon ½ teaspoon whole-grain mustard Pinch pepper Lemon wedges

Before You Begin

You’ll need an oyster knife and a large serving platter for this recipe. Using oysters that are 2½ to 3 inches long ensures that they will cook evenly. Placing the oysters on crumpled foil prevents them from tipping.

Instructions

  1. Adjust oven rack to middle position and heat oven to 450 degrees. Gently crumple and uncrumple aluminum foil and place on rimmed baking sheet. Nestle 6 (2½ to 3 inches long) well-scrubbed oysters, cupped side down, into foil on prepared sheet and bake until oysters open slightly, about 5 minutes. (It’s OK to eat oysters that don’t open.) Let oysters rest until cool enough to handle, about 5 minutes.
  2. Stir 2 tablespoons softened unsalted butter, 1 tablespoon minced shallot, 1 tablespoon minced fresh tarragon, ½ teaspoon whole-grain mustard, and a pinch pepper in bowl until well combined. Shuck 1 oyster, discard top shell, and pour liquid into butter mixture. Return oyster to foil and repeat with remaining oysters. Stir butter to incorporate oyster liquid, then divide evenly among oysters.
  3. Bake until thickest part of largest oyster registers 160 to 165 degrees, 5 to 8 minutes. Let rest for 5 minutes before serving with lemon wedges.
Roasted Oysters on the Half Shell with Shallot and Tarragon for Two
Styling by Ashley Moore.

Roasted Oysters on the Half Shell with Shallot and Tarragon for Two

Headshot of Lan LamHeadshot of Julia Collin Davison
By Lan Lam & Julia Collin Davison

Published on July 19, 2025

Save

Time

50 minutes

Yield

Serves 2

Ingredients

6 oysters, 2½ to 3 inches long, well scrubbed
2 tablespoons unsalted butter, softened
1 tablespoon minced shallot
1 tablespoon minced fresh tarragon
½ teaspoon whole-grain mustard
Pinch pepper
Lemon wedges

Ingredients

6 oysters, 2½ to 3 inches long, well scrubbed
2 tablespoons unsalted butter, softened
1 tablespoon minced shallot
1 tablespoon minced fresh tarragon
½ teaspoon whole-grain mustard
Pinch pepper
Lemon wedges

Ingredients

6 oysters, 2½ to 3 inches long, well scrubbed
2 tablespoons unsalted butter, softened
1 tablespoon minced shallot
1 tablespoon minced fresh tarragon
½ teaspoon whole-grain mustard
Pinch pepper
Lemon wedges

Why This Recipe Works

Roasting is a great option if you’re nervous about shucking or eating raw oysters or you simply want a new way to serve them on the half shell. Warming them in a hot oven made them easier to shuck, and placing them on crumpled aluminum foil steadied the oysters so that they didn’t tip over. Dolloped with mustard butter after shucking and returned to the oven to cook through, the oysters emerged plump, tender, and dressed with a punchy sauce.

Before You Begin

You’ll need an oyster knife and a large serving platter for this recipe. Using oysters that are 2½ to 3 inches long ensures that they will cook evenly. Placing the oysters on crumpled foil prevents them from tipping.

Instructions

  1. Adjust oven rack to middle position and heat oven to 450 degrees. Gently crumple and uncrumple aluminum foil and place on rimmed baking sheet. Nestle 6 (2½ to 3 inches long) well-scrubbed oysters, cupped side down, into foil on prepared sheet and bake until oysters open slightly, about 5 minutes. (It’s OK to eat oysters that don’t open.) Let oysters rest until cool enough to handle, about 5 minutes.
  2. Stir 2 tablespoons softened unsalted butter, 1 tablespoon minced shallot, 1 tablespoon minced fresh tarragon, ½ teaspoon whole-grain mustard, and a pinch pepper in bowl until well combined. Shuck 1 oyster, discard top shell, and pour liquid into butter mixture. Return oyster to foil and repeat with remaining oysters. Stir butter to incorporate oyster liquid, then divide evenly among oysters.
  3. Bake until thickest part of largest oyster registers 160 to 165 degrees, 5 to 8 minutes. Let rest for 5 minutes before serving with lemon wedges.

Gift This Recipe

Enjoyed this dish? Let others know by sharing it as a gift recipe.

This is a members' feature.