Mushroom Tart

Name: Mushroom Tart
Yield: Makes 6 Servings
Ingredients: Fresh oregano, 1 teaspoon chopped; Salt and freshly ground pepper; Cream Cheese Dough, 1 disk; Unsalted butter, 2 tablespoons; Mixed fresh mushrooms, such as cremini and stemmed shiitake, 1½ lb (750 g), halved or quartered; Shallot, 1 large, chopped; Crème fraîche or heavy (double) cream, ½ cup (4 fl oz/125 ml)