Par bake crust for 10 minutes or until slightly browned.
Boil sweet potatoes until soft.
While hot, transfer into a mixer (hand mixer or stand mixer with paddle attachment).
Add spices, butter to potatoes, mix on low for 2 minutes. Add eggs one at a time to mixture, then add vanilla.
Lastly, add flour to mixture, then add milk and mix until smooth.
Add mixture to cooled crust and bake for 45 minutes or until top has browned