This corn casserole, made with Jiffy mix, creamed corn, whole corn, sour cream, cheese, green chiles, and pimentos, is a crowd-pleasing holiday side dish.
Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking pan.
Melt butter in a large skillet over medium heat. Add onion, bell pepper, and pimento peppers; sauté until tender, about 5 minutes.
Combine corn muffin mix, chiles, whole corn, creamed corn, and eggs in a large bowl; stir in onion mixture.
Pour into the prepared baking pan.
Spoon sour cream on top of mixture; cover with cheese.
Bake in the preheated oven until casserole is lightly brown and firm, about 45 minutes.