Baked Polenta with Sausage and Cheese

Name: Baked Polenta with Sausage and Cheese
Prep time: 30 min
Total time: 30 min
Cuisine: Italian
Ingredients: 2 cups traditional or quick-cooking polenta (or substitute a tube of store-bought cooked polenta); Butter for the baking dish, plus more as needed; 1 pound fresh Italian sausages, sliced 1/2 inch (12 mm) thick; 1 tablespoon extra-virgin olive oil; 1 medium red onion (about 10 oz), chopped; 2/3 cup canned low-sodium beef stock, chicken stock, or vegetable broth; 3 tablespoons mix of finely chopped fresh rosemary and sage; Sea salt; Freshly ground black pepper; 12 ounces Taleggio cheese, chopped or grated (or substitute fontina); 1 1/2 cups Parmesan cheese, grated