Butternut Squash Lasagna

3 cups chopped onion
10cup fresh spinach
1-1/2cups shredded sharp provolone cheese
1/2cup chopped fresh flat-leaf parsley
1teaspoon salt
1/2teaspoon freshly ground black pepper
2  large eggs
115-ounce carton part-skim ricotta cheese
115-ounce cartonfat-free ricotta cheese
4cups diced peeled butternut squash
6cups Fire roasted Marinara (2 jars) or make your own
14  oven-ready lasagna noodles
1 cup grated fresh Parmesan cheese (4 ounces)

Preheat oven to 375 degrees.

Heat a large Dutch oven coated with cooking spray over medium-high heat. Add onion; saute 4 minutes or until tender. Add spinach; saute 1 1/2 minutes or until spinach wilts.  Set aside.

Combine provolone, parsley, salt, pepper, eggs, and ricotta cheeses in a large bowl.  Set aside.

Place squash in a microwave-safe bowl. Cover and cook on high 5 minutes or until tender.

Coat the bottom and sides of 2 (8-inch-square) baking dishes with cooking spray. Spread 1/2 cup Marinara in the bottom of one prepared dish. Arrange 3 noodles over sauce; spread 1 cup cheese mixture over noodles. Arrange 2 cups squash over cheese mixture; spread 3/4 cup sauce over squash.

Arrange 2 noodles over sauce; spread 1 cup cheese mixture over the noodles. Arrange 1 1/2 cups onion mixture over cheese mixture; spread 3/4 cup sauce over spinach mixture.

Arrange 2 noodles over sauce; spread 1 cup Marinara evenly over noodles. Sprinkle with 1/2 cup Parmesan. Repeat procedure with remaining ingredients in remaining pan. Cover each pan with foil.

Bake at 375 degrees for 30 minutes. Uncover and bake an additional 30 minutes.

To freeze unbaked lasagna: Prepare through Step 6. Cover with plastic wrap, pressing to remove as much air as possible. Wrap with heavy-duty foil. Store in freezer for up to 2 months.

To prepare frozen unbaked lasagna: Thaw completely in refrigerator (about 24 hours). Preheat oven to 375 degrees. Remove foil; reserve foil. Remove plastic wrap; discard wrap. Cover lasagna with reserved foil; bake at 375 degrees for 1 hour. Uncover and bake an additional 30 minutes or until bubbly.