Crispy, juicy chicken coated in a sticky, sweet and spicy gochujang sauce with onions. This easy gochujang chicken recipe is ready in just 30 minutes using one pan. I shallow-fry the cornstarch-coated chicken and let the crust set before flipping so the coating stays crispy.
Combine all the gochujang sauce ingredients in a small bowl and whisk until the sugar dissolves and the sauce is smooth. Set aside.
Dice the chicken thighs into even 1.5-inch pieces and transfer them to a large mixing bowl. Do not pat the chicken dry, as the surface moisture helps the cornstarch stick.
Add the cornstarch to the chicken and toss until every piece is evenly coated. If any spots remain uncoated, add 1-2 tablespoons more cornstarch as needed.
Heat vegetable oil in a large, heavy-bottomed pan over medium-high heat to 350°F. Fry the chicken in a single layer, working in small batches, for about 5-7 minutes. Leave the chicken undisturbed until the bottom is golden and the crust has set before flipping. Cook until both sides are golden and the internal temperature reaches 165°F. Transfer to a wire rack to keep it crispy, allowing the oil to reheat between batches.
Remove most of the frying oil, leaving 1 teaspoon in the pan. Sauté the onions for about 30-45 seconds. Whisk the sauce again, pour it into the pan, and simmer until thick and glossy, about 30-60 seconds.
Reduce the heat to medium, add the fried chicken, and toss until evenly coated in the sauce. Garnish with green onions and toasted sesame seeds. Serve immediately.
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