Mushroom and Fontina Pizza | Saveur

Ingredients

• 1 (7-gram) packet active dry yeast
• 3 cups flour
• Salt
• 3 tbsp. extra-virgin olive oil
• 6 oz. mushrooms, such as shiitake, sliced
• 1 tbsp. fresh thyme leaves, plus 4 sprigs for garnish
• Freshly ground black pepper
• 3 medium shallots, peeled and sliced
• 2 tbsp. red wine vinegar
• 3 plum tomatoes, seeded and coarsely chopped
• 2 cups freshly grated fontina
• 1⁄4 cup freshly grated parmesan