I usually get frustrated at icing recipes that contain shortening, especially when it comes to sugar cookies. I do like the idea of decorating over top of them, but every recipe I could find called for ingredients I did not already have in my pantry, like corn syrup or shortening. Searching for an answer, I found the perfect sugar cookie frosting recipe without shortening that will let you pipe amazing designs, hold its shape and still taste amazing.
If you added too much powdered sugar, you can always add a bit more milk to the mixture. this will help soften it. Using gel food coloring will not alter this ratio, but if you are using the regular kind, then remember you will need to add a bit more powdered sugar to compensate and achieve the same consistency. It is also more vibrant.
Ice the cookies immediately. If it hardens before you finish, add a bit more milk and stir it through to revive it. You can store it in an airtight container for up to a week or freeze it for a few months and have it ready whenever!
We recommend you spread it over the cookies with an icing knife. This will give the cookies a rustic and homemade look. You can add details by piping some lines on top. Adjust the consistency adding more milk or powdered sugar so that you can pipe it easily but it will still keep its shape. Do not stray too much though, if not you will need to add more butter.
You can always add sprinkles or other decorations on top. This makes for easy and fast decoration that still looks amazing (I also love the different texture the sprinkles give to the cookies!).