A birthday-worthy steakhouse dinner with sale-priced strip steak, a glossy mushroom-shallot sauce, and bubbling Parmesan potato gratin featuring late-October Washington favorites.
- Total time: 90 min
- Servings: 2 servings
- Estimated total cost: $25
- Calories per serving: 1360 cal
- Stovetop
- Oven
Drink pairing: Cabernet Sauvignon complements the strip steak’s browned crust and the savory mushroom sauce.
Details
Ingredients
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Certified Angus Beef Choice Boneless Strip Steak (1 Steak)1 pound, about 1¼–1½ inches thick $19.99
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Russet potato1 pound $1.29
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Crimini mushrooms8 ounces $4.99
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Shallots2 ounces $4.49
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Peeled garlic2 cloves $3.69
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Heavy cream¾ cup
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Parmesan cheese2 ounces, finely grated (about ½ cup)
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Unsalted butter3 tablespoons
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Neutral cooking oil1 tablespoon
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Dry red wine¼ cup
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Low-sodium beef broth¾ cup
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Dijon mustard1 teaspoon
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Dried thyme½ teaspoon
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Morton kosher salt flakes2½ teaspoons
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Freshly ground black pepper¾ teaspoon
Instructions
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Heat the oven to 400°F. Grease a shallow 1-quart baking dish with ½ tablespoon unsalted butter. Pat dry the 1-pound strip steak, season all over with 1¼ teaspoons Morton kosher salt flakes, and refrigerate uncovered while preparing the gratin.
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Scrub or peel 1 pound russet potato and slice crosswise about ⅛ inch thick. Mince 2 cloves peeled garlic. In a bowl, toss together:
- The sliced potatoes
- The minced garlic
- ¾ cup heavy cream
- ¾ teaspoon Morton kosher salt flakes
- ¼ teaspoon freshly ground black pepper
Layer the mixture evenly in the prepared baking dish, pouring all the cream over the top. Cover tightly with foil.
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Bake the gratin for 35 minutes. Uncover, scatter 2 ounces finely grated Parmesan over the top, and bake for another 25 minutes, until browned, bubbling, and easily pierced through the center with a knife. Let stand for 10 minutes before serving.
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While the covered gratin bakes, wipe clean and thickly slice 8 ounces crimini mushrooms. Peel and finely chop 2 ounces shallots. Keep them separate.
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When you uncover the gratin, heat a heavy skillet over medium-high heat. Pat the steak dry again and season with ¼ teaspoon freshly ground black pepper. Add 1 tablespoon neutral cooking oil to the skillet, then sear the steak for 3–4 minutes per side. Reduce the heat to medium, add 1 tablespoon unsalted butter, and turn and baste for another 2–4 minutes, pulling the steak at 130°F for medium-rare. Transfer to a board and rest for at least 10 minutes while making the sauce.
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Leave about 1 tablespoon of fat in the skillet, discarding any excess. Add the sliced mushrooms and cook over medium-high heat for 6–8 minutes, stirring occasionally, until deeply browned. Add the chopped shallots, ½ teaspoon Morton kosher salt flakes, ½ teaspoon dried thyme, and ¼ teaspoon freshly ground black pepper. Cook for 2 minutes, stirring.
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Pour ¼ cup dry red wine into the mushroom skillet and scrape up the browned bits. Simmer for 1–2 minutes, then add ¾ cup low-sodium beef broth and 1 teaspoon Dijon mustard. Simmer for 4–6 minutes, until reduced to a lightly syrupy sauce. Remove from the heat and swirl in 1½ tablespoons cold unsalted butter and any collected steak juices.
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Slice the rested steak across the grain and divide between two warm plates. Spoon the mushroom-shallot sauce over and alongside the meat, keeping some of the browned crust visible. Serve each plate with half the rested potato gratin.
Want more detail? See the temperature guide.