Baked Mushroom Linguine

Name: Baked Mushroom Linguine
Ingredients: 4 ounces dried mushrooms, such as porcini or chanterelle; 4 cups boiling water; 2 sprigs fresh rosemary; 2 sprigs fresh thyme, plus 2 teaspoons finely chopped; 7 tablespoons unsalted butter; 5 tablespoons all-purpose flour; 1 1/2 cups heavy cream; 1 onion, diced; 1 pound button mushrooms, stems removed, quartered; 1 pound shiitake mushrooms, stems removed, sliced; 2 1/2 teaspoons coarse salt; 1/2 teaspoon freshly ground pepper; 1 pound linguine; Unsalted butter, for pan; 1/2 cup grated pecorino Romano cheese