Turkey Cream Puff Pie

Using a sharp knife, cut a shallow X in bottom of tomato and immerse in a saucepan of boiling water 10 seconds. Immediately transfer tomato with a slotted spoon to a bowl of ice and cold water to cool, then drain. Peel, seed, and finely chop tomato. Cook onion in butter with salt in a 10-inch heavy skillet over moderate heat, stirring occasionally, until golden, about 4 minutes. Add mushrooms and cook, stirring occasionally, until mushrooms begin to brown, about 3 minutes. Sprinkle with flour and cook, stirring constantly, 1 minute, then stir in broth and bring to a boil over moderate heat, stirring constantly. Reduce heat and simmer, stirring, 1 minute (sauce will be thick). Remove from heat and stir in turkey, parsley, chopped tomato, and pepper to taste.