Melt the Butter: Place a large skillet over medium heat and gently melt the butter, watching closely so it stays golden and does not brown.
Sauté the Corn: Add the corn kernels to the skillet and cook for 5–7 minutes, stirring from time to time, until the corn is heated through and lightly charred for extra flavor.
Prepare the Creamy Sauce: In a medium bowl, whisk together the mayonnaise, Mexican crema (or sour cream), garlic and jalapeño if using, lime juice, chili powder, and salt until smooth and well blended.
Combine Corn and Sauce: Transfer the warm corn directly into the bowl with the sauce. Toss thoroughly so every kernel is evenly coated in the creamy mixture.
Portion and Garnish: Spoon the corn into individual cups or small bowls. Finish each serving with crumbled Cotija cheese, a light sprinkle of chili powder, fresh cilantro, and a lime wedge on the side for squeezing.
Serve Warm: Enjoy immediately while warm for the best flavor and texture.
