1 egg white
1/4 teaspoon vanilla extract
2 cups ++ powdered sugar
1/4 teaspoon salt
Whisk egg white and extract in a medium bowl, whisk in 1 cup powdered sugar and ¼ teaspoon salt. Swap the whisk with a rubber spatula, mix in the remaining 1 cup of powdered sugar, ensuring a smooth, pasty mixture.
Divide the paste into as many small bowls as color sprinkles you want to make.
Color each bowl and, adding a little powdered sugar as needed, mix paste together until it’s colorful and hydrated enough to roll into a ball in your hand without sticking.
Dust a clean, dry counter or baking pan with powdered sugar and roll out each color paste into several long, thin ropes, the diameter of your ideal sprinkle size. It’s a learned technique, don’t freak out, if your rope breaks or is uneven, just start over. Sprinkles are meant to bring lightness, not stress— they’re also SUPER forgiving.
Leave the ropes to dry out slightly for 10 minutes, then using a butter knife, cut them into your ideal sprinkle length. Allow to sit out for another 10 minutes before moving sprinkles— combine colors, build a single color sundae— it’s YOUR day, your vision, your Sunday Sundae, we’re just here to make it more fun!