Saute 1/2 onion and 1 1/2 Cup sliced mushroom in olive oil, salt and pepper. Add 2 cloves of garlic. I prefer to cut the rind off the brie so its not tough when youre digging in. Place cheese in center of puff pastry. Top with mushroom mixture. Wrap pastry around to make bundle cutting off excess. Bake at 400 for 20 mins. Broil to brown. Quite the crowd pleaser.