Step 2: The Filling
Cream together the corn syrup, butter and vanilla.
Sift in the confectioner's powdered sugar and beat until incorporated.
Ok yeah, that was it.
Now to get fancy and separate the filling into whites and yolks!
Take out about a third of the filling and stir in some yellow food coloring. Now you're done!
Put the two bowls in the fridge, as they're easier to work with once they're set up a little.