Food & Cooking Recipes Ingredients Pasta and Grains Rich Spinach and Leek Lasagna 2.4 (19) 1 Review By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on June 12, 2017 Print Rate It Share Share Tweet Pin Email Prep Time: 25 mins Total Time: 1 hrs 15 mins Servings: 6 Forgo the Basic Bechamel Sauce for a lighter version of this recipe. Ingredients 3 pounds leeks (white and light-green parts only), sliced into ¼-inch-thick rounds and rinsed well 3 tablespoons extra-virgin olive oil Coarse salt and ground pepper 3 cups frozen spinach (three 10-ounce packages), thawed and liquid squeezed out ¼ teaspoon red-pepper flakes ⅓ cup chopped fresh parsley 1 ½ teaspoons fresh lemon juice 1 recipe Basic Bechamel Sauce 8 no-boil lasagna noodles 1 ¾ cups grated Parmesan (3 ¼ ounces) Directions Preheat oven to 400 degrees, with racks in middle and upper third. Divide leeks between two rimmed baking sheets. Toss each with 1 tablespoon oil and season with salt and pepper. Bake until tender, 20 minutes, stirring leeks and rotating sheets halfway through. Let sheets cool on wire racks. Meanwhile, in a large skillet, heat 1 tablespoon oil over medium-high. Add spinach and cook, stirring occasionally, 4 minutes. Add red pepper, parsley, and lemon juice, and season with salt and pepper. Cook, stirring occasionally, until fragrant, 3 minutes. Transfer spinach to a medium bowl. Spread 1 cup sauce in an 8-inch square baking dish. Top with 2 noodles. Layer with half the spinach, then 1 cup sauce and 1/4 cup Parmesan. Top with 2 more noodles, half the leeks, 1 cup sauce, and 1/4 cup Parmesan. Repeat layering with remaining ingredients, reserving the last 1/4 cup Parmesan. Cover lasagna loosely with foil and bake on top rack until sauce is bubbling, 35 to 40 minutes. (Place a rimmed baking sheet on middle rack to catch any drippings.) Remove lasagna from oven and heat broiler. Sprinkle with reserved Parmesan and broil until cheese is browned and bubbling, 3 to 5 minutes. Let cool 20 minutes before slicing. Rate it Print