Cheesy Butternut Squash Pasta Sauce is a cozy and colorfully vivid sauce that feels indulgent but is made with simple, wholesome ingredients. By roasting a whole butternut squash until tender (I always do this, and it makes it so simple!), then scooping out the sweet, caramelized flesh, you get maximum flavor with minimal effort. Blended with cashews, nutritional yeast, lemon juice, miso, and a bit of garlic and onion, the sauce becomes creamy, cheesy, and rich. It’s perfect for coating pasta. A quick simmer on the stove thickens it just right, making this sauce a plant-based comfort food classic.
Why This Dish Is Delicious
- Whole-Roasted Squash: Roasting whole keeps the squash moist and naturally sweet, with less prep work.
- Creamy & Cheesy: Cashews and nutritional yeast bring luscious, cheesy flavor.
- Quick Method: No soaking cashews and only a few minutes on the stove.
- Versatile & Cozy: Ideal for pasta, baked dishes, or drizzling over roasted veggies.
- Nutritious & Vegan: Packed with vitamins A & C, healthy fats, and protein.
Ingredients for Butternut Squash Pasta Sauce
- Butternut Squash: Roasted whole until tender, then scooped into the blender.
- Cashews: Add body and creaminess without soaking.
- Nutritional Yeast: The star ingredient for that “cheesy” taste.
- Miso: Delicious salty depth.
- Olive Oil: A little richness and smooth texture.
- Lemon Juice: Balances the flavors with brightness.
- Garlic & Onion Powder: Adds savory depth and flavor.
- Salt & Pepper: Basic but essential.
- Water or Vegetable Broth: To blend and simmer to the perfect consistency.
Tools You’ll Need
- Baking sheet or roasting pan
- Blender (high-speed preferred)
- Large skillet or saucepan (for finishing the sauce)
- Sharp knife for cutting squash after roasting
How to Make
Roast the Squash Whole: Preheat oven to 400°F (200°C). Place whole butternut squash on a baking sheet. Roast 45–60 minutes, or until fork-tender. Let cool slightly, then cut open, remove seeds, and scoop out flesh.
Blend the Sauce: In a blender, combine roasted squash flesh, cashews, nutritional yeast, olive oil, lemon juice, garlic, salt, pepper, and water or broth. Blend until silky smooth.
Cook the Sauce: Pour sauce into a large skillet or saucepan. Cook over medium heat, stirring often, for 5–7 minutes, until heated through and slightly thickened. Add more broth if needed.
Serve: Toss with freshly cooked pasta, or use as a creamy sauce in your favorite recipes.
Tips & Tricks
- Roast the squash until the skin blisters slightly for the deepest flavor.
- Use a high-speed blender for a smooth, velvety finish.
- Add smoked paprika or a pinch of cayenne for extra depth.
FY: Roasting squash whole is a time-saver: no peeling or cubing required. The flesh steams gently inside the skin, developing a rich, caramelized sweetness.
Substitutions
- Cashews → Try macadamia nuts or sunflower seeds for nut-free.
- Butternut Squash → Use pumpkin, acorn, or kabocha squash.
- Nutritional Yeast → Add 1 tbsp white miso paste for savory umami if no yeast is available.
Serving Ideas
- Toss with penne, fusilli, or shells for a mac & cheese vibe.
- Drizzle over roasted broccoli or Brussels sprouts.
- Use as a base layer in vegan lasagna.
- Spoon onto baked potatoes for cozy fall comfort food.
Store
Store any leftovers in an airtight container in the fridge for up to a few days.
Cheesy Butternut Squash Pasta Sauce Recipe
Creamy, dairy-free, and full of flavor—this Cheesy Butternut Squash Pasta Sauce is made with whole roasted squash, cashews, and nutritional yeast for a naturally wholesome twist on comfort food. Perfect for cozy, plant-based dinners.
Ingredients
- 1 medium butternut squash (about 2 lbs / 900 g) – $3.00
- ½ cup raw cashews (75 g) – $1.20
- 3 tbsp nutritional yeast – $0.90
- 3 tbsp olive oil – $0.40
- 2 tbsp lemon juice – $0.40
- 2 garlic cloves – $0.20
- 1 tsp salt – $0.05 (or to taste)
- ½ tsp black pepper – $0.05 (or to taste)
- 1 tsp smoked paprika (optional)
- 1–1 ½ cups water or vegetable broth – $0.10
- Estimated Cost: $6.30 total ($1.57 per serving)
Instructions
1. Preheat oven to 400°F (200°C). Place whole butternut squash on a baking sheet. Roast 45–60 minutes, until tender. Cool slightly, then cut open, remove seeds, and scoop out flesh.
2. Add squash flesh, cashews, nutritional yeast, olive oil, lemon juice, garlic, salt, pepper, and 1 cup broth/water to blender. Blend until smooth.
3. Pour into a large skillet. Cook over medium heat for 5–7 minutes, stirring, until heated and thickened. Add more broth if too thick.
4. Taste and adjust seasoning. Serve warm over cooked pasta.
Hello! I’m Lisa, a vegan artist, photographer, author, Vegan Life Coach Educator, and RYT 200 yoga teacher. I love showing others how simple and delicious a plant-based diet can be. I draw and paint, cook, write, take lots of pics, eat lots of chocolate, and practice gratitude daily.