Winter Squash and Spinach Pasta Bake

 This is Smitten Kitchen's version of a recipe originally by Ottolenghi. We made it tonight and I really loved it. The down side is it take 1.5 hours to bake and then another half hour to rest, but other than that it's pretty easy and infinitely variable which I really like in a recipe so I definitely hope i make it again. I have varied it a little here.

Winter Squash and Spinach Pasta Bake

From Smitten Kitchen

 Ingredients:

• 1 large egg
• 1 cup (250 grams) ricotta
• 1 cup (100 grams) finely grated parmesan, divided
• 1 cup (85 grams) coarsely grated fontina cheese (I substituted cheddar for this and it was fine)
  
• 1 1/4 cups (300 grams) water
• 3 tablespoons (45 ml) olive oil, divided
• 2.5 teaspoons kosher salt (use less if you are using table salt)
• Freshly grated nutmeg
• Freshly ground black pepper
• 1/4 to 1/2 teaspoon red pepper flakes, to taste (I omitted this for kids)
  
• 3 garlic cloves, thinly sliced
• 5 ounces (140 grams) baby spinach, roughly chopped
• 2 tablespoons thinly-sliced sage leaves or 1 teaspoons chopped thyme leaves (optional) (I substituted 1/2 t. dried sage)
  
• 1 1/4-pound (560-grams) butternut or another sturdy winter squash, peeled, seeded, sliced thin or 1 pound (455 grams) in prepared chunks, sliced thin
• 8 ounces (225 grams) dried pasta (see Note), broken into pieces if large/long (I used penne and it was great)
• 3 Tablespoons pine nuts
  

Instructions:

Heat oven to 350°F (176°C). Line a 9-inch springform with 3-inch sides (see Note) with parchment paper, pressing it across the bottom and creasing the sides to get it to fit as best as possible. If the sides aren’t well covered, repeat with a second piece of parchment in the other direction.

Whisk egg and ricotta in a large bowl. Stir in half of the parmesan, fontina (or cheddar), water, 2 tablespoons of olive oil, salt, a few gratings of fresh nutmeg, lots of freshly ground black pepper, red pepper flakes (if using), and garlic. Stir in squash, spinach, pine nuts, and sage or thyme, if using. Add dried noodles and stir until everything is coated.

Pour into prepared pan and press gently so everything is in as even of a layer as possible. Sprinkle with second half of parmesan. Gently fold any parchment that extends over the rim of the pan into the center and cover the pan tightly with foil. Bake on a sheet (for extra security against drips) for 1 hour, then remove foil, reopen the parchment folded over the top, and drizzle the dish with remaining 1 tablespoon olive oil. Return to the oven uncovered for 30 minutes. Pasta will be baked through and the top will be crisp. If it doesn’t have as much color as you’d like on top, you can finish it under the broiler for a minute or two.

Cool in pan on a rack for 30 minutes before removing the springform ring, sliding the pasta bake by its parchment onto a serving plate, and cut it into wedges.

Do ahead: This keeps in the fridge for up to 1 week. Rewarm uncovered in a 350-degree oven. I haven’t frozen it, but would expect it to freeze well, tightly wrapped.

Notes:
* Structural note: Like a lasagna, this is more wet and messy when it first comes out of the oven. I recommend a 30-minute rest at minimum (what you see here in the loose slices) but it will be cleaner to cut and more set the longer it hangs out. It reheats fantastically and keeps up to a week in the fridge. Last night, we reheated wedges from 6 days ago and they were (still) perfection.

* Pan size: I only tested this in a 9-inch springform but would expect it to also fit in a 11 to 12-inch ovenproof skillet and also, less glamorously, a 9×13-inch baking dish. No need to line with parchment if you’re serving it from the pan or not worried about leakage