How to Make Chef John's Lobster Thermidor - A Step-by-Step Guide

If you're looking for a show-stopping dish that will impress your guests and satisfy your taste buds, look no further than Chef John's Lobster Thermidor. This classic French dish is a rich and indulgent combination of tender lobster meat, creamy sauce, and a crispy, cheesy topping. It's the perfect dish for a special occasion or a luxurious date night at home.

Lobster Thermidor has a long and illustrious history, originating in France in the late 19th century. It's named after the pla...

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Ingredients

  • 4 (4 ounce) lobster tails
  • 3 tablespoons butter, divided
  • 2 tablespoons minced shallots
  • Salt, to taste
  • 1 ½ cups diced mushrooms (Optional)
  • 1 tablespoon all-purpose flour
  • 2 tablespoons cognac or brandy
  • ½ cup whole milk
  • 2 tablespoons creme fraiche or heavy cream
  • 1 tablespoon chopped fresh tarragon
  • Cayenne pepper, to taste
  • 2 teaspoons fine dried bread crumbs
  • 2 teaspoons freshly grated Parmigiano-Reggiano cheese
  • 2 teaspoons melted butter

Information

  • Prep Time: 20 mins
  • Cook Time: 30 mins
  • Additional Time: 10 mins
  • Total Time: 1 hr
  • Servings: 2
  • Yield: 2 servings

  • Cut bottom shell of lobster tails using kitchen shears along each side where it meets the top shell; do not remove the shell at this point.
  • Melt 2 tablespoons butter in a skillet over medium-high heat. Place lobster tails cut side down in the butter. Cook, covered, about 3 minutes. Turn lobster tails over (they are curved so will lean to 1 side); cover and cook 1 minute. Lean them to the other side; cover and cook 1 minute more.
  • Remove from heat. Transfer lobster tails to a bowl. Remove any shell pieces from the skillet.
  • Place 1 tablespoon butter in the skillet over medium heat; add shallots and pinch of salt. Cook and stir until pan starts to deglaze and shallots soften, 3 to 4 minutes. Add mushrooms; cook stir until golden brown, 5 to 6 minutes. Add flour; stir until mushrooms are coated and cook for 2 minutes. Pour in cognac; use a kitchen torch to flame cognac to burn off alcohol. This will take just a few seconds. Add milk; cook and stir until pan is completely deglazed and milk begins to thicken and turn bubbly, about 2 minutes. Remove from heat. Stir in creme fraiche. Let cool.
  • Remove lobster meat from the shell, leaving top shell intact. Remove any bits of bottom shell from the meat.
  • Preheat oven to 450 degrees F (230 degrees C). Line a baking pan with crinkled up foil. Make 4 channel-like indentations in the foil to hold and stabilize the lobster tails as they bake.
  • Slice lobster meat down the middle and check for and remove any dark veins. Chop into 1/2-inch pieces. Transfer meat to a mixing bowl. Add cooled sauce, tarragon, pinch of salt, and cayenne pepper. Stir gently until well blended.
  • Divide mixture among the lobster tail shells; place in prepared foil-lined pan. Sprinkle each lobster tail with about 1/2 teaspoon bread crumbs and 1/2 teaspoon grated cheese. Drizzle melted butter on the stuffed shells.
  • Bake in preheated oven until nicely browned and heated through, about 10 minutes. If you like, you can turn on the broiler and broil 1 minute until tops are golden and crispy.
  • Nutrition

    590 cal.

    • Total Fat: 35g
    • Saturated Fat: 22g
    • Cholesterol: 220mg
    • Sodium: 1008mg
    • Total Carbohydrate: 14g
    • Dietary Fiber: 1g
    • Total Sugars: 5g
    • Protein: 41g
    • Vitamin C: 2mg
    • Calcium: 220mg
    • Iron: 1mg
    • Potassium: 926mg