Step 1

Heat 1 Tbsp. oil in a medium skillet, preferably cast iron, over medium-high. Add one-third of corn kernels and cook, undisturbed, until lightly charred underneath, 1–2 minutes. Toss and continue to cook, tossing occasionally, until lightly charred all over, 2–3 minutes longer.

Step 2

Meanwhile, mix shallot, chile, lime juice, and remaining 3 Tbsp. oil in a medium bowl; season with salt. Let sit at least 5 minutes or up to 1 hour to let shallot soften slightly. Add charred corn, remaining corn kernels, yogurt, 1 oz. Parmesan, and half of cilantro; season with salt. Toss to combine.

Step 3

Top corn salad with more Parmesan and remaining cilantro just before serving.