1: Preheat the oven to 400°F (200°C).
2: Cut the steak into bite-sized pieces and season with salt, smoked paprika, chili powder, garlic powder, and parsley.
3: Chop the potatoes and onion, and toss with olive oil.
4: Spread the potatoes, steak, mushrooms, green beans, and onion on a sheet pan.
5: Drizzle with additional olive oil if needed and season with salt.
6: Bake in the preheated oven for 25 minutes or until everything is cooked through.
