This butternut squash pasta is an Italian-inspired dish, not one fixed recipe from a particular region of Italy; versions vary with the pasta, herbs, and dairy used. Roasted squash, sage, cream, and Parmesan make a smooth, savory sauce that clings to pasta, while a little lemon keeps the rich flavors balanced.
Ingredients
- 1 medium butternut squash, peeled, seeded, and cut into ¾-inch cubes, about 2 pounds (900 g)
- 2 tablespoons olive oil (30 ml), divided
- 1 teaspoon fine salt (5 g), divided, plus more for the pasta water
- ½ teaspoon black pepper (1 g), divided
- 12 ounces dried pasta, such as rigatoni, shells, or fettuccine (340 g)
- 1 small yellow onion, finely chopped, about 1 cup (110 g)
- 3 garlic cloves, finely chopped or grated (about 9 g)
- 1 tablespoon chopped fresh sage (about 2 g), plus a few leaves for garnish if desired
- 1 cup low-sodium vegetable or chicken broth (240 ml)
- ½ cup heavy cream (120 ml)
- ¾ cup finely grated Parmesan, plus more for serving (about 60 g)
- 1 teaspoon finely grated lemon zest (about 2 g)
- ¼ teaspoon red pepper flakes (about 0.5 g), optional
- Up to ½ cup reserved pasta water (120 ml), as needed to loosen the sauce
Instructions
- Heat the oven and prepare the squash. Set a rack in the center of the oven and preheat it to 425°F (220°C). Peel the squash, scoop out the seeds, and cut the flesh into pieces of roughly equal size so they roast evenly. Toss the cubes on a rimmed baking sheet with 1 tablespoon of the olive oil, half the salt, and half the pepper. Spread them out in one layer; a crowded pan traps steam and makes the squash softer rather than browned.
- Roast until tender and browned. Roast for 25 to 30 minutes, turning the pieces once after about 15 minutes. The squash is ready when a fork slides through easily and the edges have golden spots. If the pieces are not tender at 25 minutes, give them a few more minutes rather than relying on color alone. Set aside a few attractive cubes for topping, if you like.
- Cook the pasta. During the final 10 minutes of roasting, bring a large pot of water to a boil and salt it generously. Add the pasta and cook until just al dente, following the package timing. Before draining, scoop out at least ½ cup pasta water. Drain the pasta, but do not rinse it; the starch on the surface helps the sauce adhere.
- Make the aromatic base. While the pasta cooks, warm the remaining tablespoon of olive oil in a large skillet or Dutch oven over medium heat. Add the onion and cook for 4 to 5 minutes, stirring now and then, until softened but not deeply browned. Add the garlic, chopped sage, remaining salt and pepper, and red pepper flakes if using. Stir for about 30 seconds, just until fragrant; garlic can turn bitter if it browns.
- Blend the squash into a sauce. Add most of the roasted squash to the skillet, reserving any cubes set aside for garnish. Pour in the broth and cream, then simmer gently for 2 minutes. Blend until smooth with an immersion blender, keeping the blade submerged to avoid splashes. Alternatively, carefully transfer the mixture to a countertop blender, vent the lid according to the blender’s instructions, and blend in batches if necessary. Hot liquid expands, so do not fill a blender jar to the top.
- Bring the pasta and sauce together. Return the sauce to low heat if you used a countertop blender. Stir in the Parmesan and lemon zest until the cheese melts. Add the drained pasta and toss for 1 to 2 minutes, adding pasta water a few tablespoons at a time until the sauce looks glossy and coats the noodles. It should be loose enough to move around the pan; it thickens as it stands. Taste and adjust the salt, pepper, or lemon zest. Serve hot with the reserved squash and extra Parmesan.
Tips
- Cut the squash evenly. Cubes of similar size finish roasting together, while a mix of tiny and large pieces can leave some dry before the others are tender. A sharp, sturdy knife and a stable cutting board make peeling and cutting easier. If the squash is especially large, use only the amount needed and refrigerate the rest promptly.
- Keep the sauce at a gentle heat. Once the cream is in the skillet, a quiet simmer is enough. A hard boil can make the sauce reduce too quickly, and adding Parmesan over high heat can leave it grainy. Take the pan off the heat briefly if it is bubbling vigorously.
- Use pasta water gradually. The sauce may seem thick right after blending, but the pasta releases starch as you toss it. Add the reserved water in small splashes and pause to check the texture. If you add too much, let the pasta simmer gently for a minute; if it becomes too thick, add another spoonful of water.
- Make practical substitutions. If fresh sage is unavailable, use 1 teaspoon dried sage, adding it with the onion so it has time to soften. Vegetable broth keeps the dish meat-free; chicken broth gives it a slightly more savory flavor. Pecorino Romano can replace Parmesan, though it is saltier, so taste before adding extra salt.
Serving Suggestions
Serve the pasta as a filling main course while the sauce is hot and silky. A simple green salad with a sharp vinaigrette makes a good contrast to the sweetness of the squash and richness of the cream. Roasted broccoli, sautéed greens, or crisp green beans also work well without competing with the sage. For a more substantial meal, offer crusty bread to catch any sauce left in the bowl.
Finish each serving with Parmesan and, if desired, a few crisp sage leaves. To make crisp sage, warm a teaspoon of oil or butter in a small pan, fry whole leaves briefly until they darken slightly and crisp, then drain them on a paper towel. This garnish is optional: chopped fresh sage already gives the sauce its herbal character. A little extra lemon zest at the table can brighten a portion that tastes especially rich.
Variations
Make it dairy-free: Replace the heavy cream with an unsweetened oat or cashew cooking cream, and use a dairy-free Parmesan-style topping or a few tablespoons of nutritional yeast. The result will be less buttery and may taste slightly sweeter, so add lemon gradually and season to taste. Check that the substitute is unsweetened; vanilla-flavored milk is not suitable for this savory sauce.
Add greens or mushrooms: Stir a few handfuls of baby spinach into the finished sauce until wilted, or sauté sliced mushrooms with the onion until their moisture has cooked off. If using mushrooms, brown them before adding the garlic so they do not crowd the pan and steam. For extra texture, leave more roasted squash cubes whole rather than blending all of them.
Change the pasta or herb: Short shapes such as rigatoni and shells hold the sauce in their ridges and pockets; long pasta such as fettuccine gives the dish a more twirlable finish. Thyme can stand in for sage, but its flavor is gentler and less woodsy. For a nuttier finish, sprinkle toasted chopped walnuts or pumpkin seeds over each serving just before eating.
Storage and Reheating
Let leftovers cool briefly, then refrigerate them in a covered, airtight container within 2 hours of cooking. They keep for 3 to 4 days in the refrigerator. The sauce will thicken as it chills, and the pasta will absorb some liquid, so the reheated dish may not be quite as loose as it was freshly made. For the best texture, store extra sauce separately from pasta if you know you will have leftovers.
Reheat a portion in a covered skillet over low heat with a splash of broth, milk, or water, stirring gently until hot throughout. You can also microwave it in a covered, microwave-safe bowl, stirring once or twice during heating. Reheat leftovers to 165°F (74°C), the USDA FSIS safe temperature for leftovers, checking the center with a food thermometer. Avoid repeated cooling and reheating; warm only the portion you plan to eat. The sauce can be frozen separately for up to 2 months, though it may look slightly separated after thawing; warm it gently and whisk while adding a little liquid.
Frequently Asked Questions
Can I use pre-cut or frozen butternut squash?
Yes. Pre-cut fresh squash saves peeling and chopping time; check that the pieces are close to the same size and roast them until tender. Frozen squash can also work, but it often releases more moisture and may not brown as well. Roast it from frozen on a spacious baking sheet, allow extra time if needed, and use the fork test before blending.
Do I have to blend the sauce?
No. Blending makes a smooth sauce, but you can mash the roasted squash with a fork or potato masher for a rustic texture. Add the broth and cream gradually, mashing until the mixture is as smooth as you like. Some small squash pieces will remain, so this version will be chunkier and may need a little more pasta water to coat the noodles evenly.
What pasta shape works best?
Rigatoni, shells, and other short ridged shapes are especially good because they catch the thick sauce. Fettuccine or another wide noodle is a nice choice if you prefer long pasta. The recipe works with most dried pasta, but cooking times vary by shape and brand; use the package directions and stop at al dente so the noodles do not become too soft when tossed in the sauce.
Can I make the sauce ahead?
Yes. Roast the squash and prepare the blended sauce up to 2 days ahead, then refrigerate it in a covered container. Reheat it gently in a skillet with a splash of broth, and cook the pasta just before serving for the best texture. Stir in the Parmesan and lemon zest when the sauce is warm, then toss with freshly cooked pasta and enough pasta water to loosen it.
Why is my squash sauce bland or too sweet?
Squash sweetness varies, and a sauce can taste flat if it needs salt, pepper, or acidity. First adjust the salt a pinch at a time, then add a little more lemon zest or a small squeeze of lemon juice to sharpen the flavor. Parmesan and sage also add savoriness. If the sauce is already salty, skip extra cheese and brighten it with lemon instead.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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