Butternut Squash Lasagna with Caramelized Onions & Walnuts
Butternut squash layered with our Everyday Marinara Sauce provides a creamy, sweet base for this protein-packed vegetarian lasagna. Thank the combination of walnuts, ricotta cheese and mozzarella for the 14 grams of protein in each serving.
Cut squash in half lengthwise and scoop out seeds. Lightly brush cut sides with 1 tsp oil and place, cut-sides-down, onto a parchment-lined baking tray. Bake in oven for 25 minutes, until squash is tender when pierced with a fork. Remove from oven and let cool to room temperature.
Meanwhile, heat remaining 1 tsp oil in a large sauté pan on medium-high. Add onions, stir and sauté for 2 to 3 minutes, until onions begin to soften. Reduce heat to medium-low and continue to cook for about 40 minutes, stirring frequently, until onions are very soft and golden brown. Remove from heat and set aside until cooled to room temperature.
Scoop out flesh of squash into the bowl of a food processor. Add ricotta, nutmeg, egg whites and Parmesan and process until smooth. Add sage and season with salt and pepper. Transfer mixture to a large mixing bowl and gently fold in caramelized onions.
Reserve 1/2 cup mozzarella, cover and refrigerate until needed. Assemble lasagna: Cover bottom of 9 x 13-inch casserole dish with about 1/2 cup Everyday Marinara Sauce. Top with a single layer of lasagna noodles, overlapping slightly, then 1 cup butternut squash mixture and 1/2 cup mozzarella. Repeat layers once, starting with 1/2 cup Everyday Marinara Sauce. Sprinkle walnuts evenly over mozzarella. Repeat layers once again. Finish with 1/2 cup Everyday Marinara Sauce, a layer of noodles, remaining butternut squash (about 1/3 cup, depending on size of squash) and remaining 1/2 cup Everyday Marinara Sauce. Cover dish with foil, place onto a baking tray and bake in oven for 45 minutes at 375°F. Remove foil, top lasagna with reserved 1/2 cup mozzarella and bake for an additional 15 minutes.
Remove lasagna from oven and allow to rest and set for 15 to 20 minutes before cutting into 12 servings. Enjoy! Lasagna can be kept frozen for up to 3 months, refrigerated for 2 to 3 days.
OPTION: Set a small bowl with additional heated Everyday Marinara Sauce at your table so your family members can drizzle even more over top of their lasagna as desired.
Try roasting the squash the evening before you put this lasagna together. The caramelized onions may also be prepared ahead of time. Prepare both in large batches and refrigerate in 1-cup servings. To use, simply drain any excess water and use as desired. By using these time-saving tips, you can whip up our veggie lasagna in about 1 hour!
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