To go along with the rainbow unicorn cake that I made for my daughter's 8th birthday, I also made these rainbow unicorn cookies as party favors, and also to pass out to her classmates on the actual day of her birthday.
For the cookies, I used my favorite sugar cookie dough (recipe in my book!), rolled it out to about 1/8 inch thick, and used these adorable unicorn cookie cutters from Cookie Cutter Kingdom to cut out my shapes. Then I baked them at 350F for 10-12 minutes, until golden brown.
While the cookies were cooling, I whipped up my royal icing (recipe also in my book!). Then I used a disposable pastry bag fitted with a small round tip to outline each cookie with stiff white icing, before filling them in with runny white icing. Then with the rest of icing, I used Americolor gel-based food coloring to tint them yellow for the horn, and rainbow colors for the mane and tail.
I had originally planned to do each unicorn with several rainbow colors, but after icing a few, I didn't like the way they looked. So instead, I chose one color for each unicorn, and did multiple colors that way.
I wrapped each cookie in cellophane favor bags and tied with closed with raffia, so that they would be easy for her to hand out to her classmates (and so they would fit nicely in her party goodie bags!)
Happy Birthday, Miss Melodie! Hope you enjoyed your unicorns!