Butternut Squash Caramelized Onion Spinach Lasagna Recipes

Steps:

• Heat the oven to 200C/180C fan/gas 6. Tip the squash and garlic into a large roasting tin or dish (you can use the same one to assemble the lasagne to save on washing-up - ours was 35 x 40cm and 5cm deep). Tear over 4-5 sage leaves, drizzle with the oil and season well, then toss to coat. Roast for 40-50 mins, moving the squash around once or twice, until soft and caramelised. Squeeze the garlic from the skins and mash with the squash, leaving a few chunky bits for texture.
• Meanwhile, make the white sauce. Melt the butter in a large saucepan, and stir in the flour to make a sandy paste. Splash a little milk into the pan, stirring continuously to prevent lumps. Keep adding more milk, a little at a time, until the paste thins to a smooth, creamy sauce and the milk has all been used. Simmer for 1 min more. Stir in the mascarpone and half the parmesan. Season well and grate in a generous amount of nutmeg.
• Tip the spinach into a colander and pour over a kettleful of boiling water to wilt (do this in batches). Once cool enough to handle, squeeze the spinach over the colander to remove the water, then season and roughly chop.
• Remove half of the crushed garlicky squash from the roasting tin and set aside on a plate. Spread the remaining squash out over the base of the tin or dish you intend to serve the lasagne in. Ladle over about a quarter of the sauce, then top with a single layer of lasagne sheets, snapping them to fill any gaps. Make an even layer of spinach on top of the pasta, and top with another quarter of the sauce, more pasta, squash, sauce, pasta and finally the remaining white sauce.
• Scatter over the remaining parmesan, the mozzarella and pine nuts. If the oven is off, heat to 200C/180C fan/gas 6 and cook the lasagne for 30 mins. Rub a little extra oil over 5 or 6 sage leaves, place them on top of the lasagne and return to the oven for another 15-20 mins until golden and bubbling. Leave to cool for 5 mins before serving.

Steps:

• Roast the butternut squash. Preheat oven to 375 degrees. Cut squash in half lengthwise; remove seeds. Place in roasting pan and drizzle with 3 tablespoons of olive oil. Place in oven and cook until soft all the way through, about 1 hour. Set aside until cool. When cooled, remove skin and place in food processor. Purée until smooth, season with salt and pepper to taste, and set aside.
• To caramelize the onions: Place 3 tablespoons of olive oil in sauté pan. Heat until hot but not smoking; add onions. Toss to coat with oil. Turn heat down to medium and cook until onions are soft and browned, about 25 minutes. Season with salt and pepper to taste. Set aside.
• Prepare a ricotta cheese mixture. Mix ricotta cheese, chopped rosemary, eggs, half the grated Parmesan and salt and pepper to taste. Set aside.
• Make a spinach Mornay sauce. Melt butter in a saucepan, add flour and stir. Cook 2 minutes. Add milk and stir until it comes to a boil. Add the rest of the grated Parmesan, the nutmeg and the defrosted spinach. Season with salt and pepper. Set aside.
• Assemble the dish. Spray a 9" x 13" pan with cooking spray. Spread 1 cup of the spinach sauce on the bottom of the pan. Cover with a layer of fresh pasta sheets. Spread half of the roasted butternut squash on top of the pasta sheets. Top with another layer of pasta sheets. Spread ricotta cheese mixture on top of pasta sheets, and spread caramelized onion on top of ricotta mixture. Cover with an additional layer of pasta sheets. Top with the other half of the butternut purée and then another layer of pasta. Finish by using the rest of the spinach Mornay sauce for the top layer. Cover with aluminum foil and bake at 350 degrees for 1 hour. Uncover and cook for 15 minutes more.

Steps:

• Heat the oil in a heavy large skillet over medium-high heat. Add the squash and toss to coat. Sprinkle with salt and pepper. Pour the water into the skillet and then cover and simmer over medium heat until the squash is tender, stirring occasionally, about 20 minutes. Cool slightly and then transfer the squash to a food processor. Add the amaretti cookies and blend until smooth. Season the squash puree, to taste, with more salt and pepper.
• Melt the butter in a heavy medium-size saucepan over medium heat. Add the flour and whisk for 1 minute. Gradually whisk in the milk. Bring to a boil over medium-high heat. Reduce the heat to medium and simmer until the sauce thickens slightly, whisking often, about 5 minutes. Whisk in the nutmeg. Cool slightly. Transfer half of the sauce to a blender*. Add the basil and blend until smooth. Return the basil sauce to the sauce in the pan and stir to blend. Season the sauce with salt and pepper, to taste.
• Position the rack in the center of the oven and preheat to 375 degrees F.
• Lightly butter a 13 by 9 by 2-inch glass baking dish. Spread 3/4 cup of the sauce over the prepared baking dish. Arrange 3 lasagna noodles on the bottom of the pan. Spread 1/3 of the squash puree over the noodles. Sprinkle with 1/2 cup of mozzarella cheese. Drizzle 1/2 cup of sauce over the noodles. Repeat layering 3 more times.
• Tightly cover the baking dish with foil and bake the lasagna for 40 minutes. Sprinkle the remaining mozzarella and Parmesan cheeses over the lasagna. Continue baking uncovered until the sauce bubbles and the top is golden, 15 minutes longer. Let the lasagna stand for 15 minutes before serving.
• *When blending hot liquids: Remove liquid from the heat and allow to cool for at least 5 minutes. Transfer liquid to a blender or food processor and fill it no more than halfway. If using a blender, release one corner of the lid. This prevents the vacuum effect that creates heat explosions. Place a towel over the top of the machine, pulse a few times then process on high speed until smooth.