Drunken Cheesy Bread

A great way to use up left over white wine. A guilty pleasure after a long day. Quick, simple and wonderful accompanied by a fresh glass of your favorite wine. 
INGREDIENTS
butter for the pan
1/2 baguette, cut into 2-inch slices
1/2 small yellow onion, thinly sliced
1/8 pound thinly sliced cooked ham
3/4 cup white wine
1/2 teaspoon black pepper
1 1/2 cups (6 ounces) grated Gruyere 

DIRECTIONS
Heat oven to 400 F. Place the bread in a buttered ovenproof skillet, a 9-inch square baking dish, or a casserole. Scatter the onion and ham over the bread. Pour the wine over the onion and ham and sprinkle with the pepper and Gruyere. Bake until the cheese has melted and begun to brown at the edges, about 20 minutes. Spoon onto individual plates.