Sprinkle-Covered Rainbow Shamrock Cakes

Let’s start this week off with a splash of color and sugar. As promised at the Merry Monday party yesterday, we are back today with another fun rainbow treat. These easy rainbow shamrock cakes are a fun addition to your holiday party or simply a nice surprise for the family. Get in the kitchen, crank some Flogging Molly, and bake up this deliciousness.

Affiliate links may be used in this post. Ordering a product through these links may result in a commission at no extra cost to you. Read the full disclosure here.

Sprinkled Shamrock Cakes Collage with Text Overlay: Sprinkle Covered Rainbow Shamrock Cakes


Get in the kitchen, crank some Flogging Molly, and bake up these delicious rainbow shamrock cakes! #stpats #recipe Click To Tweet

I have loved celebrating St. Patrick’s Day since I first moved out on my own. I always went all out with green everything, fun decorations, and games. Since those days, the celebrations have tamed quite a bit but we still enjoy celebrating. We always do some sort of festive food spread and, of course, blast the music. The kiddos get all hyped up on sugar and dance around. This year, I’m surprising them with this new sweet treat!


Close up of Sprinkled Rainbow Shamrock Cake


Step 1

First, preheat your oven to 350° F.


Flour Prepped Baking Dish

Step 2

Prepare a 9 x 13 glass baking dish by lining with shortening and then covering in flour. This makes it easier to get the cake out later. Set it to the side.


Mixed Cake Batter and Whisk in Mixing Bowl

Step 3

Prepare your cake mix according to the instructions on the box.


4 Bowls of Cake Batter

Step 4

Next, separate your mix into 4 or 5 different small bowls.


Dyed Cake Mix in 4 Separate Bowls

Step 5

Add in food coloring to each bowl and mix it in. I went with blue, green, orange, and purple but any colors from the rainbow (or all of them) will work.


Step 6

Now, drop dollops of each color of cake batter into the baking dish at random.

Step 7

Next, take a toothpick and swirl it through the cake batter in your baking dish.

Step 8

Bake for 30 minutes at 350° F.

Step 9

After your cake is finished baking, place the baking dish on a trivet to cool for 10-15 minutes.

Step 10

When the baking dish is cool enough to touch without oven mitts, flip it over onto a cooling rack to remove the cake.

Step 11

Place your cake and the cooling rack in the freezer for at least 2 hours. This will make the next steps much easier.


Cooled Cake on parchment Paper

Cut in Half Slab of Cake

Step 12

After your cake is fully cooled (even partially frozen), pull it out and cut it in half along the center like a hamburger bun. Put one half off to the side for now.

Step 13

Lay your remaining half slab of cake on a piece of parchment paper and begin cutting out your shamrocks with a cookie cutter.


  • I used 2 different sizes to reduce the amount of cake waste.
  • Put the excess cake that cannot be cut with your cookie cutters in a plastic freezer bag. You can turn it into cake pops later so none of the cake goes to waste.

Step 14

Continue cutting out shamrocks until both halves of your cake have been cut.


Cut Out Shamrock Cakes on Cooling Rack

Step 15

Now, place your shamrocks on the cooling rack and place it over the parchment paper.

Step 16

Melt your candy melts in the microwave in a microwave safe bowl in 1 minute increments until smooth.


  • After the candy is melted, add a tbsp. of shortening to make it smoother and easier to pour.

Step 17

Next, pour your melted candy over the tops of the shamrocks. Be sure that the sides are covered also.

Step 18

Sprinkle your green sugar sprinkles over the candy coating immediately.


Sprinkled Rainbow Shamrock Cakes

Step 19

Allow your candy coating to cool completely, the remove the rainbow shamrock cakes and enjoy!

Bonus Tips


Sprinkled Shamrock Cakes Collage with Text Overlay: Sprinkle Covered Rainbow Shamrock Cakes

The work on these rainbow shamrock cakes is totally worth it. The candy coating seals in the moisture for a soft, spongy cake and the sprinkles give it a surprise crunch that you will love. In case you missed it, you can find more awesome Rainbow Crafts and Treats at this week’s Merry Monday link party. Don’t forget to complete the fun with these Dollar Store St Pats Party Hats, too.

See where I’m linking up!

Don’t Forget to Pin It!

Sprinkled Shamrock Cakes Collage with Text Overlay: Sprinkle Covered Rainbow Shamrock Cakes


More Ideas You’ll Love:

Shop Your Fav Brands at Scrapbook.com