Preheat oven to 350 and grease a bundt cake pan with cooking or baking spray.
Combine cake mix, eggs, water, pumpkin puree, pumpkin pie spice and oil. Mix well until there are no lumps left in the batter.
Pour cake batter into greased bundt cake pan.
Bake on 350 for about 30 minutes or until a toothpick comes out clean.
Place cake on a cooling rack to cool.
Once cake is cooled, melt the frosting in the container for about 20 seconds. Pour the melted frosting over the entire bundt cake. It helps if you place parchment paper or paper towels underneath the cooling rack to catch the excess frosting.