I've made this a few times and it's really good. And you can do different things with it like adding veggies or changing up the cheeses and the types of bread. Beer also works instead of wine.
The recipe is from Real Simple
Drunken Cheesy Bread
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 (I used 1 cup)
1/2 teaspoon black pepper
1 1/2 cups (6 ounces) grated Gruyère
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 Gruyère. Bake until the cheese has melted and begun to brown at the edges, about 20 minutes. Spoon onto individual plates.
Tip: If you don't have Gruyère, you can substitute Swiss, Monterey Jack, fontina, or white Cheddar.
Yield: Makes 4 to 6 servings(HA!The Real Simple people are deluded! It's more like 2 servings !!!)