In a large mixing bowl combine the cake mix, extra flour, egg replacer, plant milk & oil together with a whisk or a spatula to a smooth batter~ it will be thick like brownie batter, more like a dough
Divide the batter/dough into as many bowls as you want colors & add a drop of food color to each one then mix to a uniform color. Refrigerate for about 30 minutes to a scoopable consistency (you want the scoops to hold shape)
Preheat the oven to 350°F and scoop balls of dough approximately 1 Tbs each or use a #100 scoop line them up on a parchment lined sheet pan spaced 2 inches apart
Bake for 10-15 minutes *I think mine took 12 minutes to very light golden~ do not over bake or the cookies will be dry. I like mine slightly chewy & soft inside.
Meanwhile combine the confectioners sugar & plant milk together to a thick glaze icing & dip the tops of the cooled cookies into the icing & then add sprinkles if desired
Notes
Be sure to read all the notes for success above the recipe!Storage Cake Cookies will stay fresh in an airtight container at room temperature for up to 1 week