Love this? Pin it for later! 📌
Why This Recipe Works
- Crispy Without the Deep-Fryer: A light cornstarch coat plus high heat convection equals shatter-crisp edges.
- Two-Temperature Bake: Start at 425 °F to set the crust, finish at 450 °F for maximum caramelization.
- Sweet-Savory Balance: Sea salt and a kiss of smoked paprika tame the sweet potatoes’ natural sugar.
- Make-Ahead Friendly: Cut fries can soak overnight; dip can be prepped three days early.
- Gluten-Free & Vegan: Cornstarch replaces wheat flour; dip uses oat or almond milk.
- Kid-Approved: The cinnamon-sugar dip tastes like dessert, yet each serving sneaks in 4 g fiber.
Ingredients You'll Need
The ingredient list is short, but each item pulls double duty for flavor and texture. Start with firm, unblemished sweet potatoes—look for Garnet or Jewel varieties for deep orange flesh and balanced sweetness. Peanut oil is my go-to for its high smoke point and neutral taste, but sunflower or avocado oil work just as well. Cornstarch is the secret crisping agent; do not swap in flour, which browns too quickly. Smoked paprika adds subtle campfire notes, while a final shower of flaky sea salt heightens every caramelized edge.
For the cinnamon-sugar dip, reach for Ceylon cinnamon if you can—it’s softer and more floral than the Cassia variety sitting in most pantries. Dark brown sugar lends molasses depth, but light brown or even coconut sugar will do. Whole-milk Greek yogurt gives luxurious body; for a dairy-free version, thick coconut yogurt or almond-based cream cheese blends beautifully with oat milk and a squeeze of lemon for tang.
How to Make Crispy Baked Sweet Potato Fries With A Cinnamon Sugar Dip
Prep & Soak
Peel sweet potatoes and slice lengthwise into ¼-inch (6 mm) planks, then cut into ¼-inch matchsticks. Submerge in a bowl of cold water for 30 minutes (or up to 8 hours in the refrigerator). Soaking removes excess surface starch, which can cause sticking and premature browning. Drain and spin in a salad spinner or pat absolutely dry with lint-free towels—any lingering moisture will steam the fries instead of roasting them.
Preheat & Pan Prep
Place two oven racks in the upper-middle and lower-middle positions. Preheat to 425 °F (220 °C) on convection if available. Line two light-colored rimmed baking sheets with parchment; dark pans absorb heat and can scorch the sugars. Lightly brush parchment with 1 tablespoon oil total—this initial thin film helps the cornstarch adhere.
Seasoning Toss
In a large zipper bag or bowl with a tight lid, combine cornstarch, smoked paprika, garlic powder, and black pepper. Add the dried fries; seal and shake vigorously until every stick wears a whisper-thin jacket. Drizzle in remaining oil, seal again, and tumble for 30 seconds to coat evenly. The oil should look glossy, not pooled.
Arrange for Airflow
Turn fries onto the prepared sheets in a single layer, leaving at least ¼ inch between pieces. Crowding traps steam and yields limp fries—use two pans rather than piling. Position them so one cut side faces down to maximize contact with hot metal.
Two-Stage Bake
Slide both pans into the oven and bake 15 minutes. Rotate pans top to bottom and front to back, then increase heat to 450 °F (235 °C). Continue baking 8–12 minutes more, until edges blister and centers yield just slightly to a gentle squeeze. The temperature bump caramelizes the natural sugars without burning.
Final Crisp & Season
Remove pans and, working quickly, transfer fries to a clean bowl lined with paper towel; blot away any surface oil. Immediately shower with flaky sea salt and a gentle toss—salt sticks best while the fries glisten. Return fries to the hot pan, switch oven to broil, and broil 60–90 seconds for ultra-crispy tips; watch constantly.
Cinnamon-Sugar Dip
While the fries roast, whisk Greek yogurt, brown sugar, cinnamon, vanilla, and milk in a small bowl until satin-smooth. Taste and adjust: add more milk for a pourable sauce or more sugar for churro-level sweetness. Chill until serving; the flavors meld and thicken slightly.
Serve Hot
Pile fries onto a warm platter, garnish with chopped parsley or citrus zest for color contrast, and present the dip in a ramekin surrounded by the fries. Encourage guests to dunk generously; the cool, creamy dip against the hot crunchy fry is pure magic.
Expert Tips
High Heat Is Non-Negotiable
Sweet potatoes contain more sugar than russets, so they brown faster. Starting at 425 °F sets the crust; cranking to 450 °F finishes caramelization without burning.
Use Light Pans
Dark-coated sheets absorb heat and can char the sugars before the interior cooks. If you only have dark pans, reduce the second bake by 2 minutes.
Dehydrate Before Oil
After soaking, roll fries in a lint-free towel and press firmly. Any residual water will repel oil and create steam pockets that soften the crust.
Cut Uniformly
A mandoline set to ¼ inch (6 mm) guarantees even cooking. If hand-cutting, stack planks and slice together to speed the process.
Rotate, Rotate, Rotate
Halfway through, swap pans on the racks and flip each fry. The extra 90 seconds of labor pays off in evenly bronzed edges.
Finish With Broil
A 60-second broil blisters the tips for kettle-chip-level crunch. Stay nearby; sweet potatoes can go from mahogany to charcoal in seconds.
Variations to Try
- Spicy Maple: Replace smoked paprika with ½ tsp chipotle powder; drizzle baked fries with 2 Tbsp maple syrup and ¼ tsp cayenne.
- Parmesan-Herb: Omit cinnamon dip; instead shower hot fries with ¼ cup finely grated Parmesan, 1 tsp dried Italian herbs, and lemon zest.
- Coconut-Sugar Dip: Swap brown sugar for coconut sugar and add 2 Tbsp cream of coconut for tropical notes.
- Everything-Bagel Fries: After oiling, toss with 1 Tbsp everything-bagel seasoning; serve with garlicky aioli instead of sweet dip.
- Air-Fryer Shortcut: Cook in a single layer at 380 °F for 10 minutes, shake, then 400 °F for 5–6 minutes more.
Storage Tips
Make-Ahead: Cut and soak fries up to 24 hours ahead; store submerged in the refrigerator. Drain and pat dry just before coating. The cinnamon-sugar dip keeps 3 days refrigerated in an airtight container; stir before serving.
Leftovers: Cool fries completely, then refrigerate in a paper-towel-lined container up to 4 days. Reheat on a wire rack set over a sheet pan at 425 °F for 6–7 minutes; microwaving steams and softens the crust. The dip may weep slightly—whip in 1 tsp milk to restore creaminess.
Freezer: Freeze raw marinated fries in a single layer on a tray, then transfer to a zip-top bag for up to 2 months. Bake from frozen, adding 3–4 extra minutes to the first stage. Do not freeze the dip; dairy can separate and become grainy.
Frequently Asked Questions
Crispy Baked Sweet Potato Fries With A Cinnamon Sugar Dip
Ingredients
Instructions
- Prep fries: Peel and cut sweet potatoes into ¼-inch matchsticks. Soak in cold water 30 minutes; drain and dry thoroughly.
- Preheat & pan prep: Preheat oven to 425 °F (220 °C) convection. Line two light sheet pans with parchment; brush lightly with oil.
- Season: In a bag, toss dried fries with cornstarch, paprika, garlic powder, and pepper. Drizzle with remaining oil; shake to coat.
- Arrange: Spread fries in a single layer on pans, leaving space between. Bake 15 minutes.
- Flip & boost: Rotate pans and flip fries. Increase heat to 450 °F (235 °C). Bake 8–12 minutes more until crisp.
- Broil: Broil 60–90 seconds for extra crunch. Toss hot fries with flaky salt.
- Make dip: Whisk yogurt, brown sugar, cinnamon, vanilla, and enough milk for dipping consistency. Chill until serving.
- Serve: Pile fries on a platter with the chilled cinnamon-sugar dip. Enjoy immediately.
Recipe Notes
For maximum crispness, serve fries on a wire rack so steam escapes. Dip can be made 3 days ahead; stir before serving.
