Preheat an oven to 375 degrees. Lay a strip of skirt steak down on a flat surface and sprinkle the first amount of salt and pepper, the garlic powder, onion powder, paprika, and cumin over the top. Then, drizzle 1 tsp of the FIRST amount of olive oil in the center of a sheet pan. Lay the steak across the center of the pan, and drizzle the remaining 2 tsp of that olive oil over the top of the seasonings.
Quarter the mushroom and chop the green beans. The green beans should already be blanched or thawed if from frozen. Combine the veggies with the remaining ingredients in a bowl.
Distribute the mushrooms and green beans around the steak. It’s okay if the veggies pile up a little bit, but make sure the pan is covered in ingredients.
Bake the tray in the oven for 30 minutes for a medium-done steak. Cook for an additional 10 minutes for a more well-done steak.
Once cooked, divide the steak and veggies into 3 sections and store in meal prep containers.