You'll Need -
1 Medium Onion (sliced)
1 Package of Sliced Mushrooms
1 Tablespoon of Minced Garlic
Crushed Red Pepper (to taste)
Place steak on an oversized sheet of tin foil (make sure it'll be large enough to hold all ingredients). Pile veggies, garlic, and crushed red pepper on top. Wrap the tin foil packet all the way around the food and seal it in tightly. Place packet in an oven safe baking dish and cook until steak reaches your desired temperature. I've found that if you like steak on the "rarer" side... sauté the onions and mushrooms in a pan on the stove and cook them about half way through before piling them on the steak.
For a good hearty "meat and potatoes" meal serve with mashed or baked or french fries...a side salad or a steamed veggie would be good too!
Or... serve with my favorite "side dish" below...