Adjust rack to top position (top and middle positions for 4 servings) and preheat oven to 425 degrees. Wash and dry produce.

Dice potatoes into ½-inch pieces. Cut broccoli into bite-size pieces if necessary. Halve, peel, and mince half the onion (whole onion for 4). Zest and quarter lemon.

Toss potatoes on one side of a baking sheet with a drizzle of oil, salt, and pepper. (For 4 servings, spread potatoes out across entire sheet; roast on top rack for 20-25 minutes total.)

Roast on top rack for 5 minutes (you’ll add the broccoli then).

Once potatoes have roasted 5 minutes, remove sheet from oven. Carefully toss broccoli on opposite side of sheet with a drizzle of oil, salt, and pepper. (For 4 servings, leave potatoes roasting and add broccoli to a second baking sheet; roast on middle rack.)

Return to top rack until potatoes are golden brown and broccoli is tender, 15-20 minutes more.

While veggies roast, pat pork* dry with paper towels; season all over with salt, then coat with as much Steak Spice as will stick.

Heat a drizzle of olive oil in a large pan over medium-high heat. Add pork and cook until browned and cooked through, 4-6 minutes per side. TIP: If crust begins to brown too quickly, reduce heat to medium.

Turn off heat; transfer pork to a cutting board. Wipe out pan.

Heat a drizzle of olive oil in same pan over medium heat. Add minced onion; cook, stirring, until softened and lightly browned, 3-4 minutes.

Stir in stock concentrate and ¼ cup water (⅓ cup for 4 servings). Bring to a simmer and cook until slightly reduced, 2-3 minutes.

Remove from heat and stir in sour cream until combined. Season generously with pepper.

Toss broccoli with lemon zest.

Thinly slice pork crosswise.

Divide pork, potatoes, and broccoli between plates. Spoon pan sauce over pork. Serve with lemon wedges on the side.