Best Butternut Portobello Lasagna Recipes

BUTTERNUT SQUASH LASAGNA

Steps:

• Preheat an oven to 450 degrees F (230 degrees C). Line a baking sheet with aluminum foil.
• Place squash, cut-side up, on the prepared baking sheet. Cover squash with aluminum foil.
• Bake in the preheated oven until squash is tender, 45 minutes to 1 hour 15 minutes.
• Heat 1 1/2 teaspoons olive oil in a skillet over medium heat; cook and stir mushrooms and garlic in the hot oil until mushrooms are tender, 5 to 10 minutes. Remove skillet from heat.
• Heat remaining 1 1/2 teaspoons olive oil in a separate skillet over medium heat; cook and stir onion in the hot oil until softened, about 5 minutes. Add spinach to onion; cook until spinach is heated through, 3 to 5 minutes. Remove skillet from heat.
• Heat 6 cups milk in a 5-quart saucepan over medium heat; cook and stir until milk is simmering, about 5 minutes. Whisk remaining 1 cup milk and cornstarch together in a bowl until smooth; stir into simmering milk. Bring milk mixture to just under a boil, stirring constantly with a wooden spoon and scraping bottom of pot to prevent scorching, until milk mixture has thickened into a sauce, about 5 minutes; remove pot from heat.
• Whisk 1 1/2 cups Parmesan cheese, honey, nutmeg, sage, salt, and pepper into sauce until smooth. Cover pot with a lid and keep warm over low heat.
• Bring a large pot of lightly salted water to a boil. Cook lasagna noodles in the boiling water, stirring occasionally until cooked through but firm to the bite, about 8 minutes. Drain.
• Reduce oven temperature to 375 degrees F (190 degrees C).
• Scrape flesh from butternut squash into a bowl; stir with a fork until evenly mashed. Stir ginger, salt, and pepper into mashed butternut squash.
• Spoon about 1 cup white sauce into the bottom of a 9x13-inch baking dish; arrange a layer of noodles atop white sauce. Layer 1/2 butternut squash mixture, 1/5 remaining white sauce, noodles, spinach mixture, 1/5 white sauce, noodles, 1/2 the mozzarella cheese, mushroom mixture, 1/5 white sauce, noodles, remaining 1/2 butternut squash mixture, 1/5 the white sauce, remaining noodles, remaining 1/5 white sauce, remaining mozzarella cheese, 1/2 cup Parmesan cheese, respectively. Cover dish with aluminum foil and place dish on a baking sheet.
• Bake in the preheated oven for 30 minutes. Remove cover and bake until bubbling and cheese is browned, about 15 more minutes. Let stand for 10 minutes before serving.

BUTTERNUT SQUASH LASAGNA

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.

PORTOBELLO MUSHROOM LASAGNA

Steps:

• Preheat the oven to 375 degrees F.
• Bring a large pot of water to a boil with 1 tablespoon salt and a splash of oil. Add the lasagna noodles and cook for 10 minutes, stirring occasionally. Drain and set aside.
• For the white sauce, bring the milk to a simmer in a saucepan. Set aside. Melt 8 tablespoons (1 stick) of the butter in a large saucepan. Add the flour and cook for 1 minute over low heat, stirring constantly with a wooden spoon. Pour the hot milk into the butter-flour mixture all at once. Add 1 tablespoon salt, the pepper, and nutmeg, and cook over medium-low heat, stirring first with the wooden spoon and then with a whisk, for 3 to 5 minutes, until thick. Set aside off the heat.
• Separate the mushroom stems from the caps and discard the stems. Slice the caps 1/4-inch thick. Heat 2 tablespoons of oil and 2 tablespoons of the butter in a large (12-inch) saute pan. When the butter melts, add half the mushrooms, sprinkle with salt, and cook over medium heat for about 5 minutes, until the mushrooms are tender and they release some of their juices. If they become too dry, add a little more oil. Toss occasionally to make sure the mushrooms cook evenly. Repeat with the remaining mushrooms and set all the mushrooms aside.
• To assemble the lasagna, spread some of the sauce in the bottom of an 8 by 12 by 2-inch baking dish. Arrange a layer of noodles on top, then more sauce, then 1/3 of the mushrooms, and 1/4 cup grated Parmesan. Repeat 2 more times, layering noodles, sauce, mushrooms, and Parmesan. Top with a final layer of noodles and sauce, and sprinkle with the remaining Parmesan.
• Bake the lasagna for 45 minutes, or until the top is browned the sauce is bubbly and hot. Allow to sit at room temperature for 15 minutes and serve hot.

ROASTED PORTOBELLO AND PROSCIUTTO LASAGNA

Steps:

• For filling:
• Preheat oven to 400°F. Brush rimmed baking sheet with 1 tablespoon olive oil. Toss mushrooms with 2 tablespoons olive oil in large bowl to coat. Arrange mushrooms, gill side up, in single layer on prepared baking sheet. Sprinkle with salt and pepper. Roast until tender, about 45 minutes. Cool. Cut mushrooms into 1/3-inch-thick slices.
• Meanwhile, heat remaining 2 teaspoons oil in medium nonstick skillet over medium heat. Add prosciutto; sauté until browned, about 3 minutes. Add shallots, rosemary, and thyme. Cook until shallots are tender, stirring frequently, about 5 minutes. (Mushrooms and prosciutto-shallot mixture can be made 1 day ahead. Cover separately and chill).
• For sauce:
• Bring milk, broth, and bay leaf to simmer in heavy large saucepan over medium heat. Remove from heat. Let stand 10 minutes; discard bay leaf.
• Melt butter in heavy medium saucepan over medium-low heat. Whisk in flour; stir 2 minutes. Whisk in hot milk mixture; bring to boil, whisking frequently. Reduce heat to low; simmer 5 minutes, stirring frequently. Remove from heat; stir in Gruyère, Parmesan, and nutmeg. Season to taste with salt and pepper.
• For lasagna:
• Cook noodles in large pot of boiling salted water until almost tender but slightly undercooked (noodles will finish cooking in oven). Drain and rinse with cold water. Drain again; pat dry.
• Butter 13x9x2-inch glass baking dish. Spread 1 cup sauce over bottom of prepared dish. Arrange 1/3 of noodles over sauce, overlapping to fit. Spread about 1 2/3 cups sauce over noodles. Arrange 1/2 of mushrooms over sauce. Scatter 1/2 of prosciutto mixture over mushrooms. Arrange 1/2 of remaining noodles over mushrooms, overlapping to fit. Spread 1 2/3 cups sauce over noodles. Arrange remaining mushrooms over sauce, sprinkle with remaining prosciutto, and top with remaining noodles. Spread remaining sauce over noodles, sprinkle Parmesan cheese over, and dot with butter. (Can be made 1 day ahead. Cover and refrigerate.)
• Preheat oven to 350°F. Bake lasagna until top is golden brown and sauce is bubbling, about 45 minutes (about 1 hour if refrigerated). Let stand 20 to 30 minutes before serving.