Cream the butter and two sugars until blended well, making sure you scrap the bottom of the bowl for any sugar that hasn't blended.
Add the eggs one at a time until each is well incorporated. Add the butter flavoring and the vanilla.
Add the flour and the pecans and then pour into a well greased and floured bundt pan. I actually use a floured spray that I spray very generously onto the tube pan my husband's grandmother used.
Bake in a 325 degree oven for 60 to 80 minutes. let cool for 15 minutes and turn upside down onto serving plate.
Mix the powdered sugar, flavorings and 3 tablespoons of the milk to start. if too thick add one tablespoon of the milk until a glaze consistency is acquired. Pour of the cake and wait, if you can, till set.