Keto Crispy Butternut Squash Fries

Prep: 15 minCook: 35 min4 servingsmediumAmerican
Crispy Butternut Squash Fries with Chipotle Mayo

These roasted butternut squash fries deliver a satisfying contrast of creamy interior and caramelized exterior, seasoned with warm spices and served alongside a smoky chipotle sour cream dip. Unlike fried versions, this baked method uses minimal oil while cornstarch ensures crispy edges. Smoked paprika, cumin, and garlic powder build savory depth that complements the natural sweetness of the squash. Perfect as a vegetarian side dish, appetizer, or game-day snack for anyone seeking healthier alternatives to potato fries. The creamy chipotle sauce—made from mayo, sour cream, and roasted chipotle peppers—adds smoky heat and tangy richness. This version prioritizes texture and flavor over excessive fat, making it ideal for weeknight dinners or entertaining. Serve warm for best results, pairing well with grilled proteins or as a standalone treat.

Ingredients

4 servings
  • 1 medium butternut squash, peeled, about 2 pounds
  • 2 tablespoons cornstarch
    tapioca starch1:1gluten-free

    similar crisping

    Full guide →
  • 2 teaspoons olive oil
  • 2 teaspoons smoked paprika
  • ½ teaspoon cumin
  • ½ teaspoon garlic powder
  • ½ teaspoon salt
  • ¼ teaspoon pepper
    smoked paprika + hot sauce1 tsp paprika + 1 tsp hot sauce

    spicier and less smoky

  • 2 tablespoons mayonnaise
    Greek yogurt1:1dairyproteinadds dairy

    lighter sauce

    Full guide →
  • ¼ cup plus 2 tablespoons sour cream
    Greek yogurt1:1dairyprotein

    tangier result

    Full guide →
  • 1 chipotle pepper in adobo sauce
    smoked paprika + hot sauce1 tsp paprika + 1 tsp hot sauce

    spicier and less smoky

  • lime juice, from 1/2 lime
  • 1 clove garlic, peeled
  • salt, to taste(optional)

Instructions

  1. 1

    Preheat the oven to 425 F.

  2. 2

    Peel the butternut squash and slice into thin sticks about 3/8 inch wide.

  3. 3

    Place squash sticks in a large bowl, sprinkle cornstarch over top, and toss to coat evenly.

  4. 4

    Add oil, smoked paprika, cumin, garlic powder, salt, and pepper, tossing well to coat.

  5. 5

    Arrange squash sticks in a single layer on a parchment-lined baking sheet without crowding; use two pans if needed.

  6. 6

    Bake for 25-35 minutes, flipping once after 15 minutes, until centers are soft and surfaces are browned and crisp.

  7. 7

    Combine all chipotle sauce ingredients in a food processor.

  8. 8

    Process until creamy and smooth.

  9. 9

    Serve warm fries with chipotle sauce. Refrigerate leftover sauce in an airtight container.

Tips

Tip 1

Do not crowd fries on the baking sheet; they steam instead of crisping. Use two pans if necessary to maintain single-layer spacing for maximum browning.

Tip 2

Flip fries exactly halfway through baking at 15 minutes. This ensures even caramelization on both sides and prevents burning on one side.

Tip 3

Make the chipotle sauce up to 2 days ahead and refrigerate; flavors deepen as it sits. Remove from cold storage 10 minutes before serving for better dipping consistency.

Good to Know

Storage

Leftover fries: store in an airtight container in the refrigerator for up to 3 days. Reheat in a 350 F oven for 10 minutes to restore crispness. Sauce keeps refrigerated for up to 5 days.

Make Ahead

Prepare squash sticks and store in the refrigerator for up to 8 hours before coating and roasting. Make the chipotle sauce up to 2 days ahead; refrigerate in an airtight container.

Serve With

Serve warm fries immediately after roasting with chilled or room-temperature sauce for optimal texture contrast. Pairs well with grilled chicken, fish, or as a standalone vegetarian appetizer.

Common Mistakes

Watch

Do not skip the flipping step to avoid uneven browning and burnt bottoms.

Watch

Do not crowd the baking sheet to avoid steaming instead of crisping.

Watch

Do not oversalt the squash mixture to avoid overly salty fries; the sauce adds additional seasoning.

Substitutions

Dairy-Free Swaps

mayonnaise
Greek yogurt1:1dairyproteinadds dairy

lighter sauce

Full guide →
sour cream
Greek yogurt1:1dairyprotein

tangier result

Full guide →

Gluten-Free Swaps

cornstarch
tapioca starch1:1gluten-free

similar crisping

Full guide →

General Alternatives

chipotle pepper in adobo
smoked paprika + hot sauce1 tsp paprika + 1 tsp hot sauce

spicier and less smoky

Find more substitutions →

FAQ

Can I make these fries ahead and reheat them?

Yes. Cool completely, store in an airtight container up to 3 days, and reheat in a 350 F oven for 10 minutes. Avoid microwaving, which makes them soggy. Reheating restores most of the original crispness.

What if I don't have sour cream for the sauce?

Substitute Greek yogurt or plain yogurt in equal amounts. Greek yogurt produces a tangier sauce with more protein. Regular yogurt works too but may be thinner; reduce mayo slightly to compensate for extra moisture.

How long does the chipotle sauce keep?

Store the sauce in an airtight container in the refrigerator for up to 5 days. Flavors actually deepen after a day, making it excellent for advance preparation. Bring to room temperature before serving for better consistency.