The dwarf planet Makemake is a "Kuiper Belt Object", which orbits far out from Neptune. The travel time will depend on the speed, and so far, there is no vehicle made that can do the journey at all....
A very long time A different answer: Different types of pie take different amounts of time. It also makes a difference whether one uses a frozen pie crust that only needs to be defrosted and placed...
There are many ways to make icing. The quickest is to mix icing sugar with a tiny bit of water. This takes less than a minute and produces an icing that will firm up in the refrigerator. (Icing sugar...