Adjust rack to top position and preheat oven to 450 degrees. Wash and dry all produce. Pat steak dry with paper towels; season all over with salt and pepper. Let sit at room temperature until ready to cook.

Cut potatoes into 1/2-inch-thick wedges. Toss on one side of a baking sheet with a large drizzle of olive oil, half the Fry Seasoning, salt, and pepper. Roast 10 minutes (we’ll add more to the sheet then). (If making for 4 servings, toss potatoes with all the Fry Seasoning and spread out on 1 baking sheet. Roast, tossing halfway through, for 25-30 minutes.)

Meanwhile, halve, peel, and dice shallot. Peel and halve carrots lengthwise; cut into strips the size of green beans. Toss in a medium bowl with green beans, a large drizzle of olive oil, salt, and pepper. Once potatoes have roasted 10 minutes, add carrots and beans to empty side of sheet. (Add to their own sheet if making for 4.) Continue roasting until potatoes are crispy and veggies are tender, 15-20 minutes.

Meanwhile, melt 1/2 TBSP butter (1 TBSP for 4 servings) in a large pan over medium-high heat (use a nonstick pan if you have one). Add almonds and cook, stirring, for 1 minute. Add 1/4 tsp sugar (1/2 tsp for 4) and a pinch of salt. Continue cooking until toasted, 1-2 minutes more. Turn off heat; transfer to a plate. Wipe out pan. In a second medium bowl, combine stock concentrate, mustard, and 1/4 cup water (1/3 cup for 4).

Heat a drizzle of olive oil in same pan over medium-high heat. Add steak and cook until a crust has formed on the first side, 3-6 minutes. Flip steak, lower heat to medium, and add half the Herbes de Provence and 1 TBSP butter (all the spice blend and 2 TBSP butter for 4). Cook until steak reaches desired doneness, 3-6 minutes more. Transfer to a plate and let rest. Wipe out pan.

Melt 1/2 TBSP butter in same pan over medium heat. Add shallot; cook 1 minute. Add stock mixture; reduce heat to low. Cook 1 minute. Add sour cream and any resting juices from steak. Cook until thickened, 1 minute. Stir in 1 TBSP butter (2 TBSP for 4). Slice steak against the grain. Divide steak, potatoes, and veggies between plates. Top steak with sauce. Top veggies with almonds.