Preheat a cast-iron skillet over medium. While you’re waiting, lightly roll the chiles to release some spicy flavor from the seeds and veins. Add the chiles to the hot skillet and cook them until you see blisters forming on all sides.
Remove the chiles from the skillet, then sauté the onions with the olive oil until they’re slightly browned. Add the minced garlic and chiles back in and continue cooking for another few minutes. Lastly, mix in the lime juice, soy sauce, and salt to taste. Happy eating!