Creamy Vegetable and Sausage Lasagna | RICARDO

Ingredients

• 1/2 lb (225 g) white mushrooms, halved
• 1 onion, cut into 8 pieces
• 1 celery stalk, cut into pieces
• 1 carrot, cut into pieces
• 2 garlic cloves, halved
• 3/4 lb (340 g) mild Italian sausage meat
• 3 tbsp (45 ml) olive oil
• 1 can (28 oz/796 ml) diced plum tomatoes
• 1/2 cup (125 ml) chicken broth or water
• 1 tsp dried oregano
• 1/4 tsp red chili flakes
• 1/3 cup (75 g) butter
• 6 tbsp (60 g) unbleached all-purpose flour
• 3 cups (750 ml) milk
• ½ cup (35 g) Parmesan cheese, freshly grated
• 12 lasagna noodles, cooked until al dente
• 2 cups (200 g) mozzarella cheese, grated