Steak with Marsala Sauce

1 (1 pound) (1 inch thick) boneless sirloin steak

cooking spray

1 cup sliced mushrooms

½ cup sliced onion

⅓ cup dry Marsala

¼ cup water

2 tablespoons chopped fresh parsley

1 ½ teaspoons beef base

1 pinch ground black pepper

Preheat the oven s broiler, and set the oven rack about 3 inches from the heat source.

Trim fat from steak. Place steak on cold broiler pan; broil for 5 minutes. Turn, and broil until desired degree of doneness - 3 to 7 additional minutes for rare, 8 to 10 additional minutes for medium.

Make the sauce while the steak is cooking. Coat a small saucepan with cooking spray, and add mushrooms and onion; cook and stir until tender. Stir in Marsala wine, water, parsley, beef base, and pepper. Simmer, uncovered, until liquid is reduced to 3/4 cup, about 4 minutes.

Slice steak, and serve with Marsala sauce.