Heat oven to 350 degrees. Mist a 12- by 7-inch baking dish with non-stick spray (or a 9-inch square dish or equivalent size) and set aside.
Rinse greens (so they will have some water clinging to them) and drain in colander. Place in a microwave-safe container (vented) and micro cook on high for about 8 minutes, stirring at the halfway point. Remove from microwave oven and drain greens in colander, pressing to remove any excess water.
In a medium bowl, mix creamed corn, corn and sour cream and stir until blended. Stir in drained greens and melted butter until combined. Stir in corn muffin mix just until blended. Pour into prepared dish and bake, uncovered, for 60-65 minutes.
Note: This is great as a side dish to any grilled or roasted meat. Youll find yourself making excuses to eat it.