This sweet potato pasta sauce blends roasted sweet potato, onion, and garlic into a smooth sauce without cream. Tomato paste and smoked paprika balance the vegetables' sweetness, while pasta water helps the sauce coat the spaghetti. The complete dinner is ready in 40 minutes.
Why You'll Love This Sweet Potato Pasta Sauce
- Creamy without cream: Roasted sweet potato creates a smooth sauce without adding dairy to the base.
- Balanced savory flavor: Tomato paste, smoked paprika, and roasted garlic temper the sweet potato's natural sweetness.
- Simple roasted method: The vegetables cook together before being blended with water.
- Ready in 40 minutes: The complete recipe includes preparing the vegetables and boiling the pasta water.
When I want a comforting weeknight dinner without cream, this sweet potato pasta is an easy choice. It feels as cozy as creamy hummus pasta, yet the roasted vegetables give this sauce its own character. The smooth finish also reminds me why lemon ricotta pasta works so well for relaxed dinners. Unlike pesto pasta, this recipe builds its body from vegetables rather than herbs and cheese. I return to it whenever I want pasta that feels comforting but still tastes balanced.
I roast the sweet potato first because its caramelized edges deepen the sauce without adding cream. The tomato paste brings savory depth, much like the concentrated base in cherry tomato pasta. Smoked paprika adds warmth, while the roasted garlic stays gentler than the garlic in lemon garlic spaghetti. Blending for one minute creates a smooth texture that coats every strand. Pasta water then loosens the sauce, just as careful emulsifying keeps Pasta alla Norma cohesive.
Key Ingredients in Sweet Potato Pasta Sauce
You'll find the exact measurements in the recipe card, but these ingredients shape the sauce's flavor and texture.
- Sweet potato: I weigh it after peeling, then roast it until very soft so it blends into a smooth sauce.
- Yellow onion and garlic: Roasting the onion and unpeeled garlic gives me a mellow, savory base without scorching the garlic.
- Tomato paste and smoked paprika: For me, these ingredients balance the sweet potato with concentrated depth and gentle smoky warmth.
- Spaghetti and pasta water: I use spaghetti for this recipe, while reserved pasta water helps the thick sauce coat every strand.
How to Make Sweet Potato Pasta Sauce
You can find the full printable recipe with measurements below, but here's a quick overview of how it comes together.
1. Roast the vegetables: Roast the diced sweet potato, onion, and unpeeled garlic until very soft and lightly caramelized.
2. Blend the sauce: Squeeze the garlic from its skins, then blend the roasted vegetables with water until completely smooth.
3. Cook and season: Cook the spaghetti until al dente while warming the sauce in a pot with tomato paste, smoked paprika, and optional chili flakes.
4. Combine and serve: Toss the spaghetti with the sauce, adding reserved pasta water until glossy, then add the optional garnishes.
Tips for Sweet Potato Pasta Sauce
- Roast until very soft: Fully tender sweet potato blends smoothly and prevents firm pieces from leaving the sauce grainy.
- Blend for the full minute: A thorough blend creates a finer consistency before the sauce reaches the pot.
- Warm the seasonings gently: Low to medium heat combines the tomato paste and smoked paprika without catching the thick sauce.
- Taste before serving: Sweet potatoes vary in sweetness, so adjust the final seasoning after combining the sauce and spaghetti.
Storage
I store leftovers in an airtight container in the refrigerator for up to three days. To reheat them, I warm the pasta gently in a pan with a small splash of water until the sauce loosens.
What to Serve with Sweet Potato Pasta
I keep the sides simple so the roasted sweet potato sauce remains the focus. Air fryer garlic bread is useful for gathering the sauce, while sautéed zucchini adds a lighter vegetable side. For a crisp contrast, I serve a small Greek chickpea salad.
Try These Pasta Recipes Next!
Get my new cookbook!
Get your copy of the book with easy, fresh, and tried-and-true Mediterranean Recipes from the Author and founder of Vargasavour Recipes, Estefania.
Recipe
Sweet Potato Pasta Sauce
Ingredients
- 225 g spaghetti
- 680 g sweet potato - weighed after peeling and diced
- 1 medium yellow onion - chopped
- 6 garlic cloves - unpeeled
- 3 tablespoons extra virgin olive oil
- ¾ teaspoon salt
- ½ teaspoon ground black pepper
- 240 ml water
- 2 tablespoons tomato paste
- 1 teaspoon smoked paprika
- ¼ teaspoon chili flakes - optional, plus more for garnish
- 240 ml reserved pasta cooking water
- Fresh basil - for garnish, optional
- Grated parmesan cheese - for garnish, optional
Instructions
- Preheat an oven to 200 °C. Place 680 g sweet potato, diced, 1 medium yellow onion, chopped, and 6 garlic cloves, unpeeled, on a large baking sheet. Drizzle with 3 tablespoons extra virgin olive oil and season with ¾ teaspoon salt and ½ teaspoon ground black pepper. Toss well, spread into an even layer, and roast for 30 minutes, until the sweet potato is very soft and lightly caramelized.
- Let the vegetables cool slightly, then squeeze the roasted garlic from its skins. Transfer the sweet potato, onion, and garlic to a blender. Add 240 ml water and blend for 1 minute, until completely smooth.
- Meanwhile, bring a large pot of well-salted water to a boil. Cook 225 g spaghetti according to the package directions until al dente. Reserve up to 240 ml reserved pasta cooking water, then drain the spaghetti.
- Transfer the blended sweet potato sauce to a large pot over low to medium heat. Stir in 2 tablespoons tomato paste, 1 teaspoon smoked paprika, and ¼ teaspoon chili flakes, if using. Cook for 2-3 minutes, stirring constantly, until heated through and evenly combined.
- Add the cooked spaghetti and toss until evenly coated. Gradually add up to 240 ml reserved pasta cooking water cooking water as needed, until the sweet potato pasta sauce is glossy and coats the spaghetti evenly. Taste and adjust the seasoning if necessary.
- Serve hot with optional fresh basil, grated Parmesan, and additional chili flakes.
Notes
Nutrition
Nutritional information is based on third-party calculations and should be considered an estimate only. Actual nutritional content will vary based upon brands used, measuring methods, cooking method, portion sizes, and more.
Sandra says
So good! This creamy sweet potato pasta sauce turned out rich, smooth, and full of roasted flavor. Easily one of my favorite sweet potato pasta recipes.