If you like onions and peppers this is one of my wife's favorite toppings for steak, that I make for her regularly. This makes more than enough for 2-3 people.
1 small onion, peeled and sliced
1 Anaheim Pepper, cut in half, seeds removed and sliced
8 oz. White Mushrooms, sliced
2 cloves garlic, minced
1/4 cup Worcestershire sauce
4-6 tablespoons butter, cut into chunks
1 tablespoon vegetable oil
Heat a skillet over medium high heat. Add the oil then...