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Author Notes: A riff on Al Forno's well-known and widely adored baked pasta, this one calls for making a butternut squash-sage sauce, which can be used on its own to coat boiled noodles, but works really well with this technique, too. I've used both mozzarella and fontina and like both. The original recipe, which I read about in Amanda and Merrill's A New Way to Dinner calls for 1 cup of heavy cream, but I've had success using 1/2 cup, perhaps because the butternut squash sauce tastes creamy on its own. —Alexandra Stafford
- 4 tablespoons unsalted butter, plus more for greasing
- 1 small bundle sage
- 4 cups 1-inch cubes, butternut squash (about 1 lb. post peeling)
- 1 small onion, finely chopped (about 1 cup)
- 1.5 teaspoons kosher salt, plus more to taste
- freshly cracked pepper to taste
- 1 pound penne
- 4 ounces fresh mozzarella or fontina, cubed
- 1/2 cup heaping (50 g) grated Parmigiano Reggiano
- 1/2 cup heavy cream
- Melt butter in a large heavy pot over moderately high heat until foam subsides, then add sage and cook until fragrant, about 15 seconds. Add cubed squash, diced onion, 1 1/2 cups water, 1 teaspoon kosher salt, and pepper to taste. Simmer, uncovered, stirring occasionally, until squash is very tender and water has reduced considerably, 15 to 20 minutes depending on the size of the squash pieces.
- If you have an immersion blender, purée mixture right in pot. If you don't, transfer mixture to a food processor or blender and purée until smooth. Taste sauce. Add more salt if necessary. The sauce should be thick enough to coat the back of a spoon. If it is too thin, simmer over low heat until it thickens. You should have about 3 cups of sauce.
- Preheat the oven to 500ºF. Bring a large pot of generously salted (I use 1 tablespoon kosher salt) water to a simmer. Boil penne for 5 minutes. Drain and rinse under cold water. Transfer penne to a large bowl. Pour the butternut sauce over top. Add the cream. Add the cubed mozzarella or fontina, grated parmesan, 1/2 teaspoon salt, and toss to coat.
- Butter a shallow 2-quart baking dish (such as a 9x13-inch pan). Transfer pasta mixture to prepared pan. Bake until bubbly and brown, 10 to 15 minutes. If pasta isn't browned to your liking on top, turn on the broiler, pop pan under it for 3 to 5 minutes, keeping a close watch. Cool slightly before serving.
- This recipe is a Community Pick!