Wild Mushroom Tart

Name: Wild Mushroom Tart
Ingredients: 2 cups unbleached all-purpose flour; 1/4 teaspoon salt; 3/4 cup cold unsalted butter (cut into small cubes); 2 tablespoons ice water; 1 pound shallots; 3 tablespoons olive oil (divided); 2 tablespoons balsamic vinegar; 1 1/2 teaspoons kosher salt (divided); 1/2 teaspoon freshly ground black pepper (divided); 2 tablespoons butter; 1 1/2 pounds wild mushrooms (quartered if needed); 1 large egg; 3/4 cup ricotta cheese; 3/4 cup Parmesan cheese (divided); 3 tablespoons chives; 1/4 cup heavy cream; Fresh thyme for garnish; Microgreens for garnish