Butternut Squash Lasagna

Ingredients
* 1 tablespoon olive oil
* 1 (1 1/2 to 2-pound) butternut squash, peeled, seeded, and cut
into 1-inch cubes
* Salt and freshly ground black pepper
* 1/2 cup water
* 3 amaretti cookies, crumbled
* 1/4 cup butter
* 1/4 cup all-purpose flour
* 3 1/2 cups whole milk
* Pinch nutmeg
* 3/4 cup (lightly packed) fresh basil leaves
* 12 no-boil lasagna noodles
* 2 1/2 cups shredded whole-milk mozzarella cheese
* 1/3 cup grated Parmesan

Directions

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.