The filling cannot be whisked together ahead of time. It needed to be whisked together and filled immediately. The longer the filling sits, the looser it gets which can make it tricky to fill.
If you have a 5” or 5-½” circle cutter that makes it really easy to stamp out the correct size circles. If you are like me, and don’t have that size, you can use the rim of a bowl to make a stencil, and then cut the circle out. I used a 5-¼” bowl to make the pasties, and I found this to be the perfect size.
The pasties will keep well for up to 3 days, at room temperature, in a closed container. Just make sure that the glaze is completely set before you place them on top of one another.
Un-frosted pasties can even be frozen, baked or unbaked, for up to 1 month in the freezer. Defrost at room temperature.