01 -
1½ cups powdered sugar.
02 -
1 cup softened butter.
03 -
1 large egg at room temperature.
04 -
2 teaspoons vanilla extract.
05 -
1 teaspoon baking powder.
06 -
3 cups plain flour.
07 -
¼ teaspoon kosher salt.
08 -
2 teaspoons water (if it feels too dry).
09 -
2½ cups powdered sugar, for icing.
10 -
1¼ tablespoons meringue powder.
11 -
3-4 tablespoons warm water.
12 -
¼-1 teaspoon clear vanilla flavoring.
13 -
Gel food coloring (like blue, green, or red).