Whisk the egg, sour cream, butter and salt together in a large bowl then add the sweet corn and cream style corn and stir once again.
1 egg, ½ cup sour cream, 3 tablespoons unsalted butter, ½ teaspoon kosher salt, 15 ounce can sweet corn, 15 ounce can cream style corn
Stir in the corn muffin mix then pour the batter into an 8x8-inch baking pan and bake for 35 to 45 minutes or until a toothpick comes out clean when inserted into the center of the casserole.
8 ½ ounce box Jiffy corn muffin mix
Serve with freshly minced parsley for garnish if desired.
Notes
This corn casserole can be stored in an airtight container in the fridge for up to five days.