While butter is melting, combine cornbread mix, creamed corn, beaten egg, sour cream and corn (if using) in a medium bowl. Stir just until combined.
Remove casserole dish from oven after butter has melted. VERY CAREFULLY (you don't want to splash hot butter on yourself), add the cornbread mixture to the casserole dish.
Bake for approximately 30-35 minutes, or until toothpick inserted in center comes out clean.
May be served warm or cold. Refrigerate leftovers.
Notes
Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. Any nutritional information shared on www.AReinventedMom.com should only be used as a general guideline.