Ingredients: 2 cups baby spinach, chopped,1 28-ounce can tomato sauce,2 tablespoons chicken stock,1 cup dry red wine,1 egg plus 2 egg yolks, beaten,1 teaspoon minced fresh rosemary,1 teaspoon minced fresh thyme,1 green bell pepper, chopped,1 pound ground lamb,Pinch ground nutmeg,1/2 teaspoon herbs de Provence,1/2 cup grated mozzarella,2 tablespoons olive oil,1 onion, chopped,1 1/2 pounds fresh lasagna pasta sheets,1/2 cup grated pecorino cheese, plus more for topping lasagna,1 red bell pepper, chopped,2 cups ricotta,Salt and freshly ground black pepper,1 teaspoon tomato paste
Instructions: