Baked Brie with Caramelized Onions

Melt the butter in a heavy large skillet over medium high heat. Add the onions and saute until just tender, about 6 minutes. Add thyme, reduce heat to medium and cook until the onions are golden, stirring often. This will take about 35 minutes. Add garlic and saute for 2 minutes. Add 1/4 cup of the wine. Stir until almost all the liquid is evaporated, about 2 minutes. Sprinkle the sugar over the onions. Saute until the onions are soft and brown, about 10 minutes. Add the remaining 1/4 cup of wine. Stir until the liquid evaporates, about 2 minutes. Season to taste with salt and pepper. Cool. You can make this the night before you want to serve the dish and refrigerate. Bring to room temperature before you continue the recipe. Preheat the oven to 350 degrees. Unwrap the brie. Reserve the bottom of the box. Cut away the top rind of the cheese. Return the cheese to the box, rind side down. Place the box on a baking sheet. Top the brie, evenly, with the onions. Bake until the cheese just melts. Transfer to a platter. Surround with the slices of bread.