Method
In a large sauté pan, sweat the onions until very soft, then add the garlic and cook for 30 seconds. Season onion and garlic mixture with salt and pepper and add the minced chives.
Cut 6 inch round circles out of the puff pastry sheet.
Brush each circle with an egg wash.
Place a spoon full of onions in the center of the pastry circle.
Place in alternating fashion the sliced tomatoes on top of the onions in a circle. Be sure to leave about ½ inch of the pastry exposed.
Dot the tomato slices with some goat cheese and sprinkle with the Parmesan cheese.
Bake each Vol au Vent on a parchment paper lined sheet tray in a
350 degree oven until pastry puffs and is golden brown.
For the sauce, combine the cream, wine and reduce over med high heat to 1 cup of liquid.
Add the basil and remove from the heat.
Swirl in the butter off the heat and serve under the baked Vol au Vent.