Three-Cheese Chicken Lasagna

Ingredients

• 9 lasagna noodles
• 1 cauliflower, cut into florets
• 1/4 cup (60 ml) chicken broth, approximately
• 2 tbsp butter
• 2 tbsp flour
• 1 1/2 cups (375 ml) milk
• 1 container 275 g mascarpone cheese
• 1/2 cup (35 g) Parmesan cheese, freshly grated
• 3 skinless and boneless chicken breast halves, cut into 1/2-inch (1-cm) thick strips
• 2 tbsp (30 ml) olive oil
• 8 oz (227 g) white mushrooms, thinly sliced
• 1 leek (white part only), thinly sliced
• 6 oz (170 g) fresh spinach, chopped
• 2 cups (200 g) Emmental cheese, grated