• Halve Brussels sprouts (if large, quarter them).
• Quarter mushrooms.
• Add Brussels sprouts, mushrooms and 1 tbsp (2 tbsp) oil to a parchment-lined baking sheet. Season with salt and pepper.
• Roast in the top of the oven until tender, 16-20 min.
• Add half the garlic spread to the baking sheet with veggies and toss to coat.

• Meanwhile, peel, then cut sweet potatoes into 1/2-inch pieces.
• Add sweet potatoes, 1 tsp salt and enough water to cover (by approx. 1-2 inches) to a large pot (use same for 4 ppl). Cover and bring to a boil over high heat.
• Once boiling, reduce heat to medium. Simmer, uncovered, until sweet potatoes are fork-tender, 10-12 min. Drain and return to the same pot, off heat. 
• Mash remaining garlic spread into sweet potatoes until smooth, then season with salt and pepper.

• Meanwhile, peel, then finely chop shallot.
• Finely chop tarragon leaves.
• Pat steaks dry with paper towels. Season with salt and pepper.

• Heat a large non-stick pan over medium-high heat.
• When hot, add 1 tbsp (2 tbsp) oil, then steaks. Sear until golden, 1-2 min per side.
• Remove from heat and transfer steaks to an unlined baking sheet.
• Roast in the middle of the oven until cooked to desired doneness, 4-7 min.**
• Carefully wipe the pan clean.
• When done, transfer steaks to a cutting board. Loosely cover with foil and set aside to rest for 5 min.

• Meanwhile, reheat the same pan over medium-high.
• When hot, add 1/2 tbsp (1 tbsp) butter, then shallots. Cook, stirring often, until softened, 2-3 min.
• Sprinkle flour over top. Cook, stirring often, until flour coats shallots, 30 sec.
• Add cream, broth concentrate, mustard, half the tarragon, 1/8 tsp (1/4 tsp) salt, 1/8 tsp (1/4 tsp) pepper and 1/2 cup (1 cup) water. Cook, stirring often, until sauce thickens slightly, 1-2 min.
  

• Stir as much remaining tarragon as desired into the sweet potato mash.
• Thinly slice steaks.
• Stir any resting juices from steak into the sauce.
• Divide steak, mashed sweet potatoes and veggies between plates.
• Spoon sauce over steak.

If you've opted for striploin steak, prep and cook in the same way the recipe instructs you to prep and cook sirloin steak.