Pecan Upside Down Cake

1 yellow cake mix us 1 pack of instant vanilla pudding. 3 eggs, 1/2 cup oil. 1 cup water.
Mix.
In bundt pan or square or oblong, spray with baking spray, melt 1 stick of butter, but the melted butter in pan. Cover bottom of pan with light brown sugar, layer pecans on top of butter and brown sugar.
Poor cake mix on top of pecans. Bake at 350 for 35 to 45 minutes. Bundt pan takes 45 minutes. Cool before turning it onto plate.