Vanilla or white frostingyou should be able to use the same tub as you use for the milkshake glasses
Red gel food coloring
Edible candy eyeballs
Butterscotch hard candies
First, make your sugar cookies. Let them cool, and decorate. See link in post for full instructions on cookies.
Frost the outside rim of your milkshake glasses with vanilla frosting.
Pour out sprinkles onto parchment paper or a shallow dish. Dip the rim of the glasses into the sprinkles so it's coated.
Now, sprinkle remaining sprinkles onto the frosted part of your glass. Place your milkshake glasses in the freezer to give them a quick chill- this holds the frosting and sprinkles in place so it doesn't slide off the glass.
Add your 5 scoops of vanilla ice cream and 1/2 cup milk to a blender.
Then add your red gel food coloring to the blender as well. It's best to add a small amount at first, and if you are unhappy with the color outcome, add a little more.
Pour your Elmo freak shake mixture into your chilled glasses. Add whip cream to the top. Then, add more sprinkles if desired.
Add your Elmo cookies to the top of your milkshake (place in the middle). Don't forget a cute striped straw!