Preheat the oven to 350ºF / 175ºC degrees.
Using an electric mixer. Beat the eggs on a high speed until light and foamy which will take approximately five minutes
In a separate bowl, combine the flour, confectioners sugar and baking powder. Mix in the shortening followed by the extracts until the mixture is wet and resembling crumbs
Add in the foamy eggs and mix until combined.
The dough will be stiff at this stage.
Take teaspoons of the dough and roll into inch sized balls then place onto a baking sheet leaving a two inch gap to allow for rising and spreading during the baking process.
Place into the oven and bake for 10-12 minutes. The cookies will still be pale.
Whilst the cookies are baking, make the glaze. Combine the confectioners sugar, milk and extracts until you have a smooth glaze.
As soon as the cookies come out of the oven and whilst they are still hot, drop the cookies one by one into the glaze then using forks remove them and place onto a rack to allow any excess glaze to drip off.
Top with the sprinkles whilst the glaze is still wet. Allow to dry completely then store in an airtight container.