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Sweet Potato Garlic Fries

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  • Level: Intermediate
  • Total: 55 min
  • Prep: 10 min
  • Cook: 45 min
  • Yield: 4 to 6 servings
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Caramelized Onions:

3 tablespoons olive oil

2 red onions, thinly sliced

1 tablespoon balsamic vinegar

1/4 teaspoon kosher salt

1/4 teaspoon freshly ground black pepper


2 1/2 pounds sweet potatoes or garnet yams (about 3 medium), scrubbed, unpeeled and cut into 1/4-inch-by-4-inch fries, soaked in ice water

Canola oil or vegetable oil

2 1/2 cups all-purpose flour

1/2 teaspoon baking powder

1/2 teaspoon baking soda

1/2 teaspoon kosher salt


1/4 cup (1/2 stick) unsalted butter, at room temperature

1 tablespoon chopped fresh thyme

3 cloves garlic, minced

8 ounces shredded fontina, for serving


  1. For the caramelized onions: Heat the oil over medium heat in a large nonstick skillet. Add the onions, vinegar, salt and pepper, stirring occasionally, until the onions are deep golden brown, about 20 minutes.
  2. Fries: Drain the potatoes and dry completely on a clean kitchen towel. In a large heavy-bottomed saucepan, pour enough oil to fill the pan about a third of the way. Heat over medium-high heat until a deep-frying thermometer inserted in the oil reaches 375 degrees F. (If you don't have a thermometer a cube of bread will brown in about 5 minutes.)
  3. While the oil is heating, in a large bowl, whisk together the flour, baking powder, baking soda, salt and 2 1/2 cups water until smooth. Coat the potatoes in the batter. Transfer 8 to 10 potatoes to the oil, allowing any excess batter to drip back into the bowl. Fry until golden and crisp, 5 to 6 minutes. Drain on paper towels. Repeat with the remaining potatoes.
  4. For the sauce: In a small skillet, melt the butter over low heat. Add the thyme and garlic and cook for 2 minutes. Pour the sauce over the fries and gently toss until coated.
  5. Place the fries on a platter and spoon the onions on top. Sprinkle with fontina and serve immediately.
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