Fresh Mushroom Burgundy Sauce

This is a good sauce that I use to
make a sizzling grilled steak great.
It's easy to make and is really good.

Ingredients:
1 tablespoon butter
1 large onion, peeled and chopped
10 cremini mushrooms, sliced
1 tablespoon all-purpose flour
1 tablespoon brown sugar
Salt to taste
freshly ground black pepper to taste
3/4 Cup burgundy wine

Directions:
Saute onions and mushrooms in skillet.
Sprinkle with flour, salt and pepper.
Blend in wine and stir in brown sugar.
Cook and stir until thickened.
Serve on your best grilled or broiled steak.