Preheat your oven to 350 degrees
Grease a deep lasagna pan (10"x14" or similar)
In a large bowl, whisk together 2/3 cup of granulated sugar and 5 large eggs
Add 2/3 cup of sour cream and whisk until fully combined and pale in color
Add 6 tablespoons of melted butter and whisk to combine
Add 45 ounces of creamed corn and mix to combine
Sift 3/4 cup of all purpose flour, a rounded 1/2 cup of cornmeal, 1 tablespoon of baking powder and 1/2 teaspoon of salt into a small bowl to combine
Add the sifted flour mixture into the creamed corn mixture and mix until fully incorporated
Transfer the mixture into the greased lasagna pan
Bake at 350 degrees for 55-60 minutes or until the top is golden and the pudding feels set to a light touch
Allow the pudding cool for 15 minutes before serving