Rosa's Cornbread

2 cups of Joy Brand Corn Meal (self rising).  If you can't find it use another like Martha Whites with Hot Rize
4 eggs
1 stick of butter, melted
1/2 cup vegetable oil
3 tablespoons of sugar
1 cup of buttermilk

Preheat oven to 350 degrees F.  Oil a 8" or 9" iron skillet.  In a large bowl mix cornmeal, eggs, buttermilk, oil, sugar and then pour melted butter into the batter.  Stir to combine completely.  Pour into skillet and place in oven and bake for about 30 minutes.  If top is not browned, run under broiler for just a brief time.