Turkey Sausage and Spinach Lasagna

INGREDIENTS

• 1.1 ounces all-purpose flour (about 1/4 cup)
• 1 cup 1% low-fat milk
• 1 cup unsalted chicken stock (such as Swanson)
• 1 tablespoon canola oil
• 1 bay leaf
• 1/4 teaspoon kosher salt
• 1/2 teaspoon black pepper
• Cooking spray
• 2 tablespoons water
• 1 (12-ounce) package fresh spinach
• 2 (4-ounce) links hot turkey Italian sausage
• 1/2 cup chopped shallots
• 1 tablespoon minced garlic
• 6 no-boil lasagna noodles
• 1 1/2 cups part-skim ricotta cheese
• 1 ounce shredded part-skim mozzarella cheese
• 1 ounce fresh Parmesan cheese, grated