Tiny Wild Mushroom Tart

Name: Tiny Wild Mushroom Tart
Yield: 0
Ingredients: 1-inch ball of pie dough; 1 teaspoon butter; 1/4 teaspoon olive oil; 1/4 teaspoon chopped shallots; 1 tablespoon wild mushrooms; 1/2 teaspoon white wine; 1 teaspoon herbs (thyme, parsley, chives); 1 tablespoon creme fraiche; 1 tablespoon shredded Gruyere