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Root Beer Float Cupcakes with Ice Cream Frosting

These Root Beer Float Cupcakes with Ice Cream Frosting are all summer! Using ice cream in the frosting is a perfect way to get the ice cream flavor but not worry about the melting!!

Overhead view of a Root Beer Float Cupcake with a straw

These are a two-fer.

They are Root Beer Float cupcakes, they are also “early-birthday” cupcakes…hence the straw AND the sprinkles.

Got it?

So yeah…my kid has a summer birthday, so he doesn’t get a special day designated to him at school…no goody bags to pass out to classmates, no friends making handmade cards to give him, no birthday crown…

The effect of parents letting their guard down in October as opposed to April.

Apparently, though…in the world we live in, where everything is always fair, everyone gets a trophy and there is no last place, my kiddo gets to celebrate his summer birthday during the school year…with a “Summer Birthday Celebration”.

The sweet teachers at the school didn’t factor in, however, that my child also expected presents on his early birthday, deciding that everyone ELSE in the WHOLE school got “Summer Birthday Celebration Presents”.

I let him pick his cupcake flavor instead.  Life is a compromise.

The choice du jour was Root Beer Float Cupcakes.  Cheaper than a new iPod.

Root beer float cupcakes drizzled with chocolate

These are an easy Root Beer Float Cupcake with Vanilla Ice Cream Frosting.

Look what I added in there…All Spice and Cinnamon.  Not enough to make it a spice cake, but enough to bump up the Root Beer flavor a bit.

Containers of Ground Allspice and Cinnamon

And I also added enough Root Beer to make them completely kid-friendly.

Root beer being poured into a liquid measuring cup

With the batter mixed, I baked them up…

Vanilla cupcake batter in a paper-lined muffin tin

And started on the frosting.

It began with some vanilla ice cream.

A pint container of vanilla ice cream

Honestly, the ice cream doesn’t make a HUGE taste difference, since I used vanilla, but the idea of throwing ice cream into the frosting made me happy.

You need to let the ice cream sit out for a bit so it isn’t frozen…if you make that mistake the frosting will seem perfect until the ice cream melts, and then you will have a melty frosting cupcake.

I know this because, well, I didn’t factor that in the first time.

Yes, melty cupcakes everywhere.

Learn from my mistakes.

After I got the frosting just right, I drizzled it with a little Root Beer syrup, but you could easily use chocolate.

Root beer float cupcakes with vanilla frosting and chocolate drizzle on a cooling rack

And since we couldn’t forget that they were for a “Summer Birthday Celebration” I added some sprinkles…to amp up the birthday-ness of it all.

Root beer float cupcakes decorated with chocolate drizzle, sprinkles, and a straw coming out the top

No presents, just cupcakes.

Feel sorry for my child.

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Root Beer Float Cupcakes with Ice Cream Frosting

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  • Author: Cookies & Cups


makes 24 cupcakes




  • 3/4 cup butter, room temperature
  • 1 1/2 cups granulated sugar
  • 3 eggs
  • 1 tsp vanilla extract
  • 1 1/2 tsp root beer extract
  • 2 1/2 cups flour
  • 2 1/2 tsp baking powder
  • 1 tsp salt
  • 1/8 tsp all spice
  • 1/8 tsp cinnamon
  • 1 1/4 cups root beer

Ice Cream Frosting:

  • 1 cup butter, room temperature
  • 1/2 cup vegetable shortening
  • 1/2 cup vanilla ice cream, softened
  • 8 cups powdered sugar



  1. Preheat oven to 350°
  2. Line muffin tins with cupcake liners
  3. Beat butter and sugar together for 2 minutes on medium speed until light and fluffy.
  4. Add eggs and extracts and continue mixing for 1 more minute, scraping down sides as necessary.
  5. In a separate bowl whisk together flour, baking powder, salt, all spice and cinnamon.
  6. Turn mixer to low and add half the dry mixture and half the root beer, stirring until combined, repeat with remaining dry mixture and root beer until combined.
  7. Fill lined muffin tins about 2/3 full (approx 1/4 cup batter) and bake 15-17 minutes until centers are set.
  8. Cool on wire rack completely before frosting.


  1. In stand mixture cream butter and shortening together until smooth. Add in 1/2 cup softened ice cream and mix until combined. Slowly add in powdered sugar.
  2. When all powdered sugar is incorporated turn mixer up to medium and beat for 30 seconds.
  3. If necessary, add more ice cream 1 Tablespoon at a time until desired consistency is reached. But remember not to add too much ice cream, as when it comes up to room temperature it could make your frosting too soft.
  4. *optional ~ drizzle cupcakes with root beer or chocolate syrup, if desired and decorate with a straw cut in half.

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57 comments on “Root Beer Float Cupcakes with Ice Cream Frosting”

  1. Woow looks super tasteful! If only I could pull off cupcakes like this ones. And the ice cream icing? Bah, impossible with my baking skills, hahah, but I’m gonna try over the weekend. I’m sure I will be freezing and defrosting the ice cream for the whole day and my fiance will drink all the beer in the meanwhile 😀

    Have a beautiful day!

  2. DessertForTwo

    This is a blog robbery!!! Obey my rules and no one will get hurt:

    Pack these up & mail them to me so I can eat them all in one sitting.

    Do as I say and no one will get hurt!!!


  3. Sue @ Cakeballs, cookies and more

    aw how fun for your kiddo, and I would so have not let the ice cream thaw out, and it would have been a huge mess, and I would have had to eat it all myself.

  4. Elizabeth@ Food Ramblings

    These look amazing! I want to make cupcakes for my rehearsal dinner and these might be the winner 🙂

  5. Rootbeer and vanilla ice cream = two of my favorites!
    How adorable are these Shelley!
    Love the straws!
    LOVE the idea of ice cream in the frosting!
    That =s MAGIC!!!

  6. Katrina @ In Katrina's Kitchen

    True story: we just took our 5 year old on a special overnight vacation…no baby brother. We seriously could have just bought him a root beer and he would have been just as excited. We let him have it for the first time and that was his best memory of the whole darn weekend. Yay for root beer.

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