Sirloin Steak in Mushroom Sauce

Sirloin Steak in Mushroom Sauce

with Caramelized Onion Mashed Potatoes & Roasted Carrots

Yield: 2

Adapted from: Hello Fresh

This Sirloin steak has little more than salt and pepper for seasoning. Ultra-creamy mashed potatoes and tender roasted carrots make it both filling and hearty, while the mushroom pan sauce that’s spooned on top has savory complexity.
Prep: 10 Cook: 50

  • 12oz carrots
  • 1yellow onion
  • 1clove garlic
  • 14oz sirloin steak
  • 2tsp Dijon mustard
  • 16oz Yukon gold potatoes
  • 4oz button mushrooms
  • 2TBS sour cream
  • 1oz beef demi-glace
  • salt & pepper
  • sugar
  • cooking oil
  • butter


Prep:

Adjust rack to top position and preheat oven to 425°F. Wash and dry produce.

Trim, peel, and cut carrots diagonally into 1-inch-thick pieces. Peel and dice potatoes into ½-inch pieces.

Tip: For speedier spud prep, skip the peeling.

Halve, peel, and thinly slice the onion. Trim and thinly slice mushrooms. Peel and mince garlic.

Cook carrots & mash:

Toss carrots on a baking sheet with a large drizzle of oil, salt, and pepper.

Roast on top rack until browned and tender, 25-30 minutes.

Meanwhile, place potatoes in a medium pot with enough salted water to cover by 2 inches. Bring to a boil, cook until tender, 15-20 minutes.

Drain and return potatoes to pot. Mash with sour cream until smooth. Season with salt and pepper.

Keep covered off heat until ready to serve.

Caramelize onion:

While potatoes cook, heat a large drizzle of oil in a large, preferably nonstick, pan over medium-high heat. Add onion, cook, stirring occasionally, until browned and softened, 8-10 minutes.

Add 1 tsp sugar and a splash of water, cook until caramelized, 2- to 3-minutes more. Season with salt and pepper.

Turn off heat, transfer to a small bowl. Wipe out pan.

Cook steak:

Pat steak dry with paper towels, season all over with salt and pepper.

Heat a large drizzle of oil in pan used for onion over medium-high heat. Add steak and cook to desired doneness, 3- to 6-minutes per side.

Transfer to a cutting board to rest.

Make sauce:

Add 1 TBS butter and mushrooms to pan used for steak over medium-high heat. Cook, stirring, until softened, 3- to 5-minutes.

Add garlic, cook until fragrant, 30 seconds.

Stir in demi-glace and ¼ cup water. Bring to a boil, then reduce to a low simmer.

Stir in mustard. Simmer until thickened, 2- to 3-minutes. Season with salt and pepper.

Finish & serve:

Slice steak against the grain.

Divide mashed potatoes, carrots, and steak between plates. Top mashed potatoes with caramelized onion. Top steak with mushroom sauce and serve.

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