Steak and Cheese Garlic Toas

1. Heat olive oil in a pan, over medium heat. Add sliced onions
2. After 5 minutes, add peppers, garlic and mushrooms. Cook 2 more minutes.
3. Add sliced steak, cooking til desired doneness, add more salt and pepper if desired.
4. Butter the bread on the outside, add mayo on the inside. Place 2 slices of cheese on each slice of bread and place steak mixture inside.
5. Grill until cheese is gooey and bread on each side is crispy and browned.