1/2tspvanilla extract(or any flavor you prefer -- vanilla goes with pretty much anything, though)
Gel food coloring
In medium-sized bowl, stir together 1 cup powdered sugar, cornstarch, water, corn syrup and vanilla extract until well-combined.
Stir in the remaining 1/2 cup powdered sugar.
Add food coloring and stir until well-combined and desired color is reached (remember, the more coloring you add the more you will be able to taste it in the final product).
Transfer mixture into a piping bag fitted with a #4 Wilton tip*.
Line two cookie sheets with wax or parchment paper and, using your piping bag, draw long, sprinkle-width horizontal lines across the paper. If desired, also make small dots (about the size of a pencil eraser) along the sides of the wax paper for some variety in shape.
Allow to set undisturbed for at least 12 hours to dry.
Once dried, peel off any dots or shapes you have made and then use a knife to cut down your horizontal lines to make sprinkles.
That's it! Sprinkle over your favorite treats! These keep well in an airtight container.
*If you don't have this specific tip, you could also get away with using a similar size, or with cutting a small (sprinkle's-width) hole in the tip of a ziploc bag and using that. Just be careful using a Ziploc bag, as the sprinkle mixture is thick and may cause the Ziploc bag to burst if squeezed too hard. This recipe will be a hand workout as it can be tough to squeeze.