Butternut Squash, Kale and Walnut Spaghetti
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Butternut squash, kale, and crunchy walnuts combined with perfectly cooked pasta for a weeknight pasta meal that feels celebration worthy.
When we visited California over the summer, I fell in love with using walnuts in savory dishes. We had a few dishes that included them including grilled peaches and a delicious pasta dish. At home, I love using walnuts in recipes like butternut squash, kale and walnut spaghetti.

Walnuts are delicious and so versatile. I love using them in everything from dinner to dessert. In addition to omega-3 fatty acids, walnuts also offer 4 grams of protein and 2 grams of fiber per ounce. With their perfect crunch and and flavor combined with their health benefits, they are definitely the superior nut.
Ingredients for Butternut Squash, Kale and Walnut Spaghetti
- Pasta – I like this recipe best with a long pasta like spaghetti or bucatini. You could substitute a short cut pasta like penne too.
- Oil
- Garlic Cloves
- Spices and Seasonings – Salt, Pepper, Crushed Red Pepper and Chili Powder
- Butternut Squash – Acorn squash or delicata squash would also work well here.
- Kale – Baby spinach is a good stand in.
- Walnuts
- Goat Cheese

How to Make Fall Squash Spaghetti
The full list of ingredients and steps to create this pasta recipe can be found in the printable recipe card below. Here is a brief overview:
- Season and roast the butternut squash in the oven. Let it cool slightly.
- Cook the pasta to al dente. Reserve some of the pasta water before draining.
- Make the pasta “sauce” by blending some of the cooked squash with the reserved pasta water.
- Sauté the garlic, crushed red pepper, and kale.
- Combine everything and enjoy.

I love replacing a traditional spaghetti sauce with a vegetable based sauce and the walnuts go so perfectly with the butternut squash flavor. Plus, the walnuts add just the perfect amount of crunch to the dish. My whole family loves it.
What to Serve with Butternut Squash and Kale Spaghetti
The fall flavors in this recipe go great with some crusty bread and a quick tossed salad. If you want to add even more vegetables to the meal, you could also include some roasted broccoli or asparagus.


Butternut Squash, Kale and Walnut Spaghetti
Ingredients
- 3 cups diced butternut squash
- 2 Tablespoons oil divided
- Salt and pepper
- 1 1/2 teaspoons chili powder
- 12 ounces spaghetti
- 2 cloves garlic minced
- 1/4 teaspoon crushed red pepper
- 2/3 cup chopped kale
- 1/2 cup chopped walnuts
- 1/4 cup crumbled goat cheese optional
Instructions
- Preheat oven to 425 degrees. Line a rimmed baking sheet with nonstick foil. Add butternut squash to pan and drizzle with 1 1/2 Tbsp oil. Toss to coat. Season with salt, pepper and chili powder. Bake in preheated oven for 30-40 minutes or until tender. Remove from oven and let cool slightly.3 cups diced butternut squash, 2 Tablespoons oil, 1 1/2 teaspoons chili powder, Salt and pepper
- Bring a large pot of water to boil over high heat. Season with salt and add spaghetti. Cook for 7 minutes. Reserve 1/2 cup of pasta water and then drain pasta.12 ounces spaghetti
- Add 1 1/2 cups of cooked butternut squash to food processor or blender. Turn on machine and add reserved pasta water. Blend until mixed well.
- Heat remaining 1/2 Tbsp oil in a large skillet over medium heat. Add garlic and crushed red pepper. Cook for 1-2 minutes or until fragrant. Add kale and cook for 2-3 minutes or it begins to wilt.2 cloves garlic, 1/4 teaspoon crushed red pepper, 2/3 cup chopped kale
- Toss hot pasta with butternut squash sauce, kale mixture, butternut squash cubes and walnuts. Top with additional chopped walnuts and goat cheese if desired.1/2 cup chopped walnuts, 1/4 cup crumbled goat cheese
Nutrition




I see one of my lunches next week! Thanks for sharing on the What’s for Dinner link up and don’t forget to leave a comment at the party – Next week’s features that also leave a comment get pinned and tweeted!
Really tasty looking dish!
Great photography too!
Thanks
Michelle
My favorite way to incorporate walnuts? You mean besides eating them straight out of the bag. Ha ha!
Thanks for sharing on Creative K Kids #TastyTuesdays
What a great idea, Shannah! I never even thought of replacing a traditional spaghetti sauce with a bit of vegetable. I’ll have to give this one a try! Perfect way to eat more veggies 🙂 Thanks for sharing this with us on #shinebloghop today!
This looks amazing- and simple enough for even me to do!
pINNING.
THANKS FOR SHARING
#theshinebloghop
This looks unbelievably delicious–thanks so much for sharing (always on the hunt for new, healthy vegetarian recipes!) and this looks like a real winner. I’ve just repinned it 🙂
Stopping in from SITS Sharefest today, and hope you’re having a great weekend! XO
This looks so tasty! Love all the autumnal colors and flavors in there!