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Lobster & Sirloin with Shallot-Sherry Butter
Lobster & Sirloin with Shallot-Sherry Butter

Lobster & Sirloin with Shallot-Sherry Butter

plus Garlic Fingerling Potatoes & Roasted Asparagus

Recipe Development Team
Recipe Development TeamUpdated on November 20, 2025

Tender sirloin meets succulent lobster in this ultimate surf-and-turf romance! The steak gets a luxurious sherry butter bath while lobster tails transform into ruby-red treasures. Garlic-kissed fingerling potatoes and crisp asparagus complete this symphony, all tied together with velvety sherry butter sauce that will make your taste buds sing with joy!

Allergens:
Milk
•Shellfish

The quantities provided above are averages only.

Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.

Total Time40 minutes
Prep Time10 minutes
DifficultyMedium

Ingredients

serving amount

12 ounce

Sirloin Steak

6 ounce

Asparagus

2 tablespoon

Crème Fraîche

(Contains: Milk)

½ teaspoon

Dried Thyme

¼ ounce

Chives

12 ounce

Fingerling Potatoes

1 unit

Chicken Demi-Glace

(Contains: Milk)

8 ounce

Lobster Tails

(Contains: Shellfish)

1 teaspoon

Garlic Powder

1 unit

Shallot

10 teaspoon

Sherry Vinegar

Not included in your delivery

teaspoon (tsp)

Black Pepper

4 teaspoon (tsp)

Cooking Oil

5 tablespoon (tbsp)

Butter

(Contains: Milk)

teaspoon (tsp)

Salt

Nutrition Values

/ per serving
Calories1050 kcal
Fat68 g
Saturated Fat31 g
Carbohydrate48 g
Sugar9 g
Dietary Fiber7 g
Protein60 g
Cholesterol365 mg
Sodium1020 mg
Due to the different suppliers we purchase our products from, nutritional facts per meal can vary from the website to what is received in the delivered box, depending on your region.

Utensils

•Baking Sheet
•Paper Towel
•Medium Pan
•Small pot
•Whisk

Cooking Steps

Prep
1
  • Adjust racks to middle and top positions and preheat oven to 425 degrees. Wash and dry produce.

  • Halve potatoes lengthwise. Trim and discard woody bottom ends from asparagus. Halve, peel, and mince shallot. Mince chives.
  • Cut 4 TBSP butter into 8 pieces (for 4 servings, cut 8 TBSP butter into 16 pieces). Place in a small bowl and refrigerate until ready to use in Step 6.

Roast Potatoes & Prep Lobster
2
  • Toss potatoes on a baking sheet with a drizzle of oil, half the garlic powder (you’ll use the rest in the next step), salt, and pepper.

  • Roast on middle rack until browned and tender, 20-25 minutes.

  • Meanwhile, using kitchen shears, cut along underside of each lobster shell*, leaving meat intact and stopping at tail. Pull sides of shell apart to expose meat (do not remove meat from shell).
Finish Lobster Prep
3
  • Cut two 10-inch-long pieces of foil (four pieces for 4 servings). Set one lobster tail in the center of each piece of foil, cut sides facing up. Sprinkle with remaining garlic powder and top each with ½ TBSP butter. Season with salt and pepper.
  • Wrap foil up and around lobsters, pinching to tightly seal. Place on one side of a second baking sheet.

Roast Lobster & Asparagus
4
  • Place asparagus on opposite side of sheet from lobster. Toss with a drizzle of oil, salt, and pepper.

  • Roast on top rack until lobster is tender and cooked through and asparagus is tender and lightly browned, 10-12 minutes. TIP: Carefully open the foil packet to check that lobster is fully cooked! The shell and meat should be red. If lobster needs more time, reseal and return lobster to oven until fully cooked.

Cook Steak
5
  • Meanwhile, pat steak* dry with paper towels; season generously all over with salt and pepper.

  • Heat a large drizzle of oil in a medium pan over medium-high heat. Add steak and cook until browned and cooked to desired doneness, 3-6 minutes per side.

  • Turn off heat; transfer to a cutting board to rest at least 5 minutes.

Make Sauce
6
  • In a small pot, combine shallot, vinegar, demi-glace, ½ tsp thyme, and ½ cup water (1 tsp thyme and 1 cup water for 4 servings).

  • Bring to a boil, then reduce heat to medium high, whisking occasionally, until reduced to about 2 TBSP (4 TBSP for 4), 7-8 minutes.

  • Remove from heat. Whisk in reserved butter one piece at a time until sauce is creamy. TIP: Return pot to low heat to melt butter.

  • Whisk in crème fraîche. Stir in half the chives.

Finish & Serve
7
  • Thinly slice steak against the grain.

  • Carefully remove lobster from foil; discard foil. Using a chef’s knife, halve lobster tails lengthwise. TIP: If you don't have a chef’s knife, use a large, sharp knife.

  • Divide potatoesasparagus, steak, and lobster between plates. Spoon shallot-sherry butter sauce over lobster and steak. Garnish everything with remaining chives and serve.

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