Penne Rigate with Sausage, Mushrooms, and Ricotta - Lidia

Ingredients

• Kosher salt
• 3 tablespoons extra-virgin olive oil
• 8 ounces sweet Italian sausages, removed from casings
• 1 medium onion, finely chopped
• 12 ounces mixed wild mushrooms (such as button, cremini, oyster, shiitake, chanterelle), thickly sliced
• 4 ripe plum tomatoes, seeded and diced
• 2 teaspoons chopped fresh thyme
• Peperoncino flakes
• 2 cups low-sodium chicken broth
• 1 pound penne
• 1/4 cup chopped fresh Italian parsley
• 1 cup fresh ricotta
• 1/2 cup freshly grated Grana Padano