Preheat oven to 375 degrees and grease an 8x8 baking pan.
Pour melted butter into prepared pan.
Add both the corn and cream style corn into the pan.
Add in the eggs and sour cream, stir until all is mixed.
Add 1 cup cheese and muffin mix.
Stir until combined.
Place into oven to bake about 40-45 minutes.
Just before being fully baked, remove from oven and sprinkle remaining 1 cup cheese on top. *This keeps the cheese from being baked too long and becoming a hard layer on top
Place pan back into oven for an additional 5-10 minutes, or until cooked through and cheese has melted.
Remove from oven and serve!