Catherine's Corn Casserole

1 small onion
1/2 stick margarine
2 eggs
1 can whole kernel corn - undrained
1 can cream corn
1 box corn bread muffin mix (8 1/2 oz)
1 cup shredded cheddar cheese

1. In a casserole dish melt margarine over chopped onion for two minutes in microwave.
2. Stir in 2 eggs, corn and corn bread muffin mix.
3. Fold in cheddar cheese.
4. Bake uncovered in a 350 degree oven for one hour.

My sister, Tanya contributed this recipe. It was from a friend of hers in her twin club.