Try this Corn Casserole I Recipe.
Many home cooks ruin this dish by ignoring the moisture content of canned vegetables, leading to a dense, soggy center instead of a cohesive bake. Drainage is vital; draining the whole kernel corn and the canned green chilies prevents excess liquid from interfering with the dry corn muffin mix. When combining wet components like sour cream, melted butter, and cream-style corn with dry ingredients, stir only until moistened. Overworking the batter develops excess gluten from the wheat flour present in commercial muffin mixes, transforming a tender, cake-like crumb into a rubbery disappointment.
Baking at a steady 350 degrees F requires a properly greased two-quart casserole dish to facilitate even heat transfer along the edges while allowing the center to set fully. Extended baking times of up to 75 minutes are necessary because the dense dairy and egg matrix requires sustained thermal energy to coagulate properly without burning the exterior. Allowing the casserole to rest for five minutes off the heat lets the starches finish setting and makes portioning clean slices significantly easier.