Easy Rainbow Sugar Cookies

5 from 1 vote

Soft sugar cookies are taken to the next level when decorated with blue frosting {sky}, white clouds, rainbows and pots of gold!!

Prep Time45

Cook Time30

Total Time1 15

Course: Dessert

Cuisine: American

Servings: cookies

Calories: 240kcal

Preheat the oven to 350°.
Combine the white cake mix, cornstarch and all purpose flour in a large bowl. Whisk the ingredients together to combine.
Add the softened butter, shortening, eggs, vanilla extract to the dry mixture and cream together using a hand held {or stand} mixer. The dough will be a nice thick consistency.
Use a medium cookie scoop, measure the dough into your hand and form the cookie dough mounds into round discs. Place the cookie dough discs onto a silicone mat {or parchment} lined baking sheet, baking 8 cookies at a time.
Bake for 9-11 minutes or until the cookies are baked through but not over baked. Remove from the oven and allow them to cool completely on the baking sheet.

While the cookies are baking, add a bit of melted chocolate to the top of a mini Rolo {or peanut butter cup} candy and top with gold coin sprinkles to cover {work one pot of gold at a time}. Set aside and allow the chocolate to harden.
Divide the white frosting into two bowls with ¾ of the frosting in one bowl and the remaining ¼ in a piping bag {or zipper bag}. Color the bowl of frosting with blue food coloring until it is the desired color.
To assemble, gather your blue frosting, white frosting in a piping {or zipper} bag, pots of gold and rainbow candies. Working one cookie at a time, frost the top of the cooled cookie with the blue frosting to cover. Take the piping {or zipper} bag of white frosting and pipe dots {or clouds} on the top of the cookie in two spots about an inch apart. Take the rainbow candy and place one end into one cloud and make an arch, place the other side of the rainbow in the other bunch of clouds {white frosting}. If the rainbow does not want to stick, add additional white frosting. Then place a pot of gold on one side of the rainbow and press slightly.
Continue until all of the cookies are decorated and then allow them to set up until the frosting has dried. Store the rainbow cookies in an airtight container in a single layer at room temperature for up to 4 days. The sugar cookies can be frozen undecorated for up to 3 months.

Use a cookie scoop {or about 1.5 tablespoons}. Doing so will keep all of the cookies the same size and help them bake at the same rate.
Form the dough into a disc. This dough is thick and will not spread a bunch, so forming the cookie dough into a disc keeps the cookies a nice size and shape.
Use store bought frosting. You can always make your own buttercream but using store bought keeps this recipe simple and quick.
Make the pots of gold before you are ready to assemble. Do not try to make them as you go. It is important that they get a few minutes to set up.
If the rainbow candy doesn't stick in the frosting clouds, add a bit more white frosting. Sometimes the candy can be a bit temperamental but adding a little extra frosting helps.
Give the cookies enough time to set up before serving. The frosting will take about an hour to harden.