Combine all the casserole ingredients, mashing the sweet potatoes as you stir.
Once you have all of your casserole ingredients combined add to a greased casserole dish.
Combine the remaining butter, pecans and brown sugar and crumble on top of sweet potato mixture
Bake at 350 for 40 minutes
Optional add on- Mini Marshmallows. Add marshmallows to the top once the casserole has baked completely and place it under the broiler 2-3 minutes-watch it closely so it doesn't burn