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St. Patricks Day Rainbow Cupcakes

Adorable and festive Rainbow St Patricks Day Cupcakes featuring a Chocolate Guinness cake with a rainbow buttercream frosting. These are so delicious and fun to make.

Rainbow Cupcakes For St Patricks DaySt Patrick’s Day Cupcakes. These are Rainbow Frosted Guinness Cupcakes!

The alcohol cooks completely out. The Guinness adds wonderful depth of flavor and a yummy light texture. Kids love these cupcakes!

Okay folks! St. Patricks day is coming! It’s time to get working in the kitchen. I absolutely love to make things as festive as I can.  Party decor and party food are my Modus Operandi. For pretty much EVERY Holiday.

My whole family groans whenever a holiday comes around. I run around the house like a lunatic creating decorations and planning party menus.

Themed decorations and food around any of the holidays are going to happen at my house.

Creative energy well spent is creating cute things. People of all ages love these adorable Rainbow colored treats.

Rainbow Cupcakes with golden candies are perfect St. Patrick’s Day events.  These lil beauties are showstoppers on a party tray.

And this recipe is easy to accomplish. The rainbow frosting technique is described and pictured below to help you accomplish it. So Cute!!

Rainbow Cupcakes For St Patricks DaySuper Cute Rainbow Frosting

Let’s Dive into this delicious scratch recipe. A Guinness chocolate cake topped with a colorful, eye catching, rainbow buttercream frosting.

The Guinness increase the depth of flavor and lightness to these little cakes. The whole family will enjoy these cuties. There is No alcohol in the finished product. It ALL bakes out. Promise. And yes, kids LOVE these too.

I actually decorated two different versions of this cute St Patrick’s Day party cake and frosting recipe. I split them up into different posts because one post was just too confusing to read! Now you have two distinct decorating options.

Apply this frosting technique to any cupcake recipe you prefer. It will be adorable. Theme them easily to kids parties, showers and other group events that need a bit of rainbow pizzaz!

For a solid mint green, Airhead Rainbow look go to my St. Patrick’s Day Guinness Cupcake recipe. The same outstanding chocolate cake and buttercream frosting is used for both recipes.

For more cake and frosting recipe ideas visit Cupcake Corner!

Rainbow And Mint Buttercream Guiness Cupcakes For St Patricks Day

Who’s ready for St. Patty’s Day? Decorated either way these are delicious treats!

St Patrick’s Day Cupcakes decorating tips:

So back to this cool rainbow look.

I am REALLY excited about this Rainbow frosting. I got to try my hand at rainbow frosting! So fun and they turned out adorable! This technique is really quite simple.

I show you in the printable recipe card below how to use color stripes in the bag.

This method  is WAY easier than loading three separately colored frostings into one bag.  I show you how to do that in my Multi colored Rainbow Cupcake recipe.

This is a pretty simple way to do rainbow frosting. BUT TAKE NOTE! The rainbow colors are only on the OUTSIDE of the frosting. To fully immerse your frosting in colorful rainbow hues follow the directions in my Multi colored Rainbow Cupcakes.

Here is your Printable Rainbow Cupcakes Recipe Card:

Rainbow Cupcakes For St Patricks Day
Yield: 12 cupcakes

St. Patricks Day Rainbow Cupcakes

Prep Time: 1 hour 10 minutes
Cook Time: 20 minutes
Total Time: 1 hour 30 minutes

Adorable and festive  St Patricks Day Rainbow Cupcakes featuring a Chocolate Guinness cupcake with a rainbow buttercream frosting. These are so delicious and fun to make. The alcohol cooks completely out. The Guinness adds wonderful depth of flavor and a yummy light texture. Kids love these cupcakes!

Ingredients

For the Cupcakes:

  • 1/2 Cup Guinness Beer, I used Extra Stout
  • 1/2 Cup Unsweetened Cocoa Powder
  • 1 Stick Butter, 1/2 Cup
  • 1 Cup Flour
  • 1 Cup Granulated Sugar
  • 3/4 Tsp Baking Soda
  • 1/4 Tsp Salt
  • 1/3 Cup Sour Cream
  • 1 Large Egg

For the Frosting:

  • 2 Sticks Softened Butter, 1 Cup
  • 4 Cups Powdered Sugar
  • 1/4 Tsp Vanilla Extract
  • 1/4 Tsp Peppermint Extract
  • 2 Tbsp Milk

Instructions

  1. Preheat Oven to 350 F
  2. Heat Butter and Guinness in a small Saucepan to a simmer.
  3. Add Cocoa powder in and whisk into the mixture until it is combined.
  4. Remove Saucepan from heat and let cool.
  5. Mix together Flour, Sugar, Baking Soda, and Salt in a medium bowl.
  6. Next Beat together the Egg, Vanilla, and Sour Cream on a low speed.
  7. Slowly add the chocolate sauce mixture into the egg and sour cream, beat together until combined.
  8. Next add the flour mixture one part at a time, beating thoroughly in between additions, make sure to scrape the sides of the bowl down.
  9. Once the batter is thoroughly mixed, pour the batter into a muffin tin lined with baking cups.
  10. Fill baking cups 2/3 full.
  11. Bake for 18-20 minutes or until a toothpick comes out cleanly when inserted.

Frosting:

  1. Beat softened butter for 1-3 minutes until it is light and fluffy.
  2. Add the powdered sugar in a little bit at a time.
  3. Once the butter and powdered sugar are thoroughly mixed together, add in the milk one tablespoon at a time.
  4. Add the vanilla extract next followed by the peppermint.
  5. Note: Add the peppermint extract in a little bit at a time, make sure the mint taste is to your liking. I would go easy on the peppermint if you aren't a huge fan of mint!
  6. Decorations:

Rainbow Frosting:

  1. Place a decorator bag in a cup with the tip you want to use in it.Rainbow Cupcakes For St Patricks Day
  2. Using a butter knife or small paint brush, paint red, orange, purple, green, blue, and yellow in strips along the sides of the bag. Be careful not to mix any of the colors!Rainbow Cupcakes For St Patricks Day
  3. Put white buttercream frosting into the piping bag.
  4. Shake the piping bag until all of the frosting is down to the tip.
  5. Pipe a small amount of frosting into a bowl until all of the rainbow colors are coming out evenly.
  6. Now you are ready to decorate your rainbow cupcakes!

Nutrition Information

Yield

12

Serving Size

1 frosted cupcake

Amount Per Serving Calories 502Total Fat 25gSaturated Fat 15gTrans Fat 1gUnsaturated Fat 7gCholesterol 80mgSodium 322mgCarbohydrates 65gFiber 1gSugar 53gProtein 3g

You will NOT be eating this many calories for a frosted cupcake. The frosting recipe makes a lot more than you will eat.

Did you make this recipe?

Please leave a comment on the blog or share a photo on Instagram

St. Patricks Day Cupcakes With Rainbow Buttercream-Pin Image

Adorable and festive Rainbow St Patricks Day Cupcakes featuring a Chocolate Guinness cake with a rainbow buttercream frosting. These are so delicious and fun to make.

Recipe Adapted From: Le Petit Pieorig

22 Best Ideas St Patrick's Cupcakes – Best Round Up Recipe Collections

Monday 4th of July 2022

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Recipes @ Globe Scoffers

Saturday 12th of March 2016

These cupcakes look really fun.thanks for sharing.

Kayti Lavergne

Saturday 12th of March 2016

Thank you!

Prairie Gal Cookin

Sunday 6th of March 2016

These are so colorful - Love it!!

Thanks so much for linking up over at Sunday’s Simple Homemaker on Prairie Gal Cookin! Please feel free to drop in and leave a link or two on this week’s link-up, we’d love to see what you’ve been up to! http://www.prairiegalcookin.com/sundays-simple-homemaker-2nd-weekly-link-up/

swathi

Monday 29th of February 2016

Beautiful cupcakes Diane , Love to try it, as kids love colors, I will skip Guinness, thanks for sharing with Hearth and soul blog hop, pinning and tweeting.

homemadefoodjunkie

Monday 29th of February 2016

Kids do love these cupcakes. They are so fun!

Katerina

Monday 29th of February 2016

They look so beautiful and happy and the little huts are so cute!

homemadefoodjunkie

Monday 29th of February 2016

Thank you Katerina!

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