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.