Preheat the oven to 400 degrees F. Bake the sweet potatoes directly on the oven rack until tender, about 50 minutes. Let cool completely.
Coat a baking sheet with cooking spray. Peel the sweet potatoes, transfer to a large bowl and mash. Stir in 1 1/2 cups crushed chips, the onion, butter and egg. Add 1/2 teaspoon salt, and pepper to taste; stir until combined.
Spread the remaining 2 1/2 cups crushed chips in a shallow dish. Scoop about 1 tablespoon of the sweet potato mixture into your hands and shape into a small 1-inch-long cylinder. Repeat to make about 36 cylinders. Roll in the crushed chips to coat on all sides and arrange on the prepared baking sheet; spray with cooking spray. Bake, rotating the pan halfway through, until crisp and golden, about 30 minutes. Season with salt.
Meanwhile, mix the mayonnaise and Sriracha in a small bowl. Serve on the side for dipping.
Photograph by Johnny Miller

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	185.81 Kcal (778 kJ)
Calories from fat	103.34 Kcal
		% Daily Value*
Total Fat	11.48g	18%
Cholesterol	8.15mg	3%
Sodium	57.78mg	2%
Potassium	311.19mg	7%
Total Carbs	19.08g	6%
Sugars	3.39g	14%
Dietary Fiber	2.96g	12%
Protein	1.4g	3%
Vitamin C	0.5mg	1%
Vitamin A	0.5mg	15%
Iron	0.7mg	4%
Calcium	22.6mg	2%

Amount Per 100 g
Calories	354.84 Kcal (1486 kJ)
Calories from fat	197.35 Kcal
		% Daily Value*
Total Fat	21.93g	18%
Cholesterol	15.56mg	3%
Sodium	110.34mg	2%
Potassium	594.29mg	7%
Total Carbs	36.43g	6%
Sugars	6.48g	14%
Dietary Fiber	5.64g	12%
Protein	2.67g	3%
Vitamin C	0.9mg	1%
Vitamin A	0.9mg	15%
Iron	1.4mg	4%
Calcium	43.2mg	2%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.