Root Beer Float Cupcakes

Featured in: Sweet Treats

Fluffy vanilla cupcakes get a playful twist with root beer soda and concentrate in both the cake and buttercream. The result is a sweet treat bursting with soda shop nostalgia—light, tender cakes crowned with ultra-creamy root beer buttercream. Each is finished with a swirl of whipped cream and a cherry, evoking classic float flavors in every bite. Simple to make, these are perfect for celebrations or whenever you crave a taste of something wonderfully retro, with all the magic of an ice cream float—no straw required.

Updated on Tue, 30 Sep 2025 20:52:55 GMT
Root Beer Float Cupcakes topped with creamy swirl frosting, ready for a sweet American treat. Pin
Root Beer Float Cupcakes topped with creamy swirl frosting, ready for a sweet American treat. | potfuljoy.com

This nostalgic root beer float cupcake recipe transforms the classic soda fountain treat into a delectable dessert you can enjoy anytime. The tender vanilla cupcakes infused with root beer essence and topped with creamy root beer buttercream capture all the magic of a traditional float without the melting ice cream.

I first made these for my son's baseball team celebration and watched as both kids and adults reached for seconds. The combination of familiar flavors in an unexpected form made these an instant hit at our family gatherings.

Ingredients

  • All purpose flour: creates the perfect tender structure for these cupcakes
  • Baking powder and baking soda: work together to create the ideal rise and texture
  • Unsalted butter: provides rich flavor while allowing you to control the salt content
  • Root beer soda: adds authentic flavor and helps create a moist crumb
  • Root beer concentrate: delivers that distinctive sassafras punch that makes these truly special
  • Whole milk: adds richness and helps activate the leavening agents
  • Vanilla extract: enhances the classic float flavor profile we all love

Instructions

Prepare Your Equipment:
Preheat your oven to 350°F and line a standard 12cup muffin tin with paper liners. Having everything ready before mixing ensures smooth preparation and prevents overmixing once wet and dry ingredients combine.
Mix Dry Ingredients:
Whisk together flour, baking powder, baking soda, and salt in a medium bowl until thoroughly combined. This even distribution prevents pockets of leavening agents that could cause uneven baking.
Cream Butter and Sugar:
Beat the softened butter and granulated sugar with an electric mixer for a full 2 to 3 minutes until the mixture becomes noticeably lighter in both color and texture. This incorporates air into the batter creating a fluffier cupcake.
Add Eggs and Flavoring:
Incorporate eggs one at a time, allowing each to fully integrate before adding the next. Then mix in vanilla extract and root beer concentrate. The eggs provide structure while the flavorings infuse the batter with that classic root beer float essence.
Combine Wet Ingredients:
Mix root beer soda with milk in a small measuring cup. The carbonation in the soda will help create a tender crumb in the finished cupcakes while adding authentic flavor.
Alternate Mixing:
Add the dry ingredients and root beer milk mixture to your butter mixture in alternating portions, starting and ending with dry ingredients. Mix just until combined after each addition to prevent developing too much gluten which would make tough cupcakes.
Fill Cupcake Liners:
Distribute the batter evenly among the prepared liners, filling each about two thirds full. This leaves room for proper rising without overflow.
Bake to Perfection:
Bake for 16 to 18 minutes until a toothpick inserted in the center comes out clean or with just a few crumbs. Allow to cool briefly in the pan before transferring to a wire rack.
Make Root Beer Buttercream:
Beat softened butter until creamy then gradually incorporate powdered sugar. Add root beer soda, concentrate, vanilla, and salt, beating until light and fluffy. The combination creates a frosting that perfectly complements the cupcake base.
Frost and Garnish:
Once cupcakes are completely cool, top with the root beer buttercream. Add optional whipped cream, a maraschino cherry, and decorative straw to mimic the classic float presentation.
Freshly baked Root Beer Float Cupcakes, with a luscious buttercream, perfect for dessert tonight. Pin
Freshly baked Root Beer Float Cupcakes, with a luscious buttercream, perfect for dessert tonight. | potfuljoy.com

The root beer concentrate is truly the secret ingredient in this recipe. I discovered it at a specialty baking store years ago and have been using it to add authentic root beer flavor to desserts ever since. My grandmother always made homemade root beer floats on summer evenings, and these cupcakes let me share that memory with my own children.

Finding Root Beer Concentrate

Root beer concentrate can sometimes be challenging to locate in regular grocery stores. Look in the baking aisle near the extracts or check specialty baking shops. Online retailers always carry it if you cannot find it locally. The concentrate delivers a much more authentic flavor than relying on root beer soda alone, so it is worth seeking out.

Make Ahead Options

The unfrosted cupcakes can be made a day ahead and stored in an airtight container at room temperature. The buttercream can also be prepared in advance and refrigerated, just bring it to room temperature and rewhip before using. Once frosted, the cupcakes should be consumed within 2 days for best quality, though they will remain safe to eat for up to 4 days when properly stored.

Creative Variations

Transform these cupcakes into different soda shop classics by swapping the root beer concentrate for other flavors. Try orange cream for a creamsicle version, cherry for a cherry cola cupcake, or even grape for a grape soda inspired treat. The base recipe remains the same, just switch out the flavoring agents and adjust garnishes to match your chosen theme.

Serving Suggestions

Serve these cupcakes alongside small glasses of cold root beer for an interactive dessert experience. Create a nostalgic soda shop dessert table with these cupcakes as the centerpiece. Perfect for retro themed parties, summer gatherings, or anytime you want to evoke childhood memories.

Frosted Root Beer Float Cupcakes, a delightful treat evoking the flavor of a classic soda float. Pin
Frosted Root Beer Float Cupcakes, a delightful treat evoking the flavor of a classic soda float. | potfuljoy.com

This presentation never fails to delight guests of all ages and creates a beautiful visual contrast between the brown buttercream and white whipped cream.

Recipe Q&A

Can I use root beer extract instead of concentrate?

Yes, root beer extract works well; just adjust the amount for your desired flavor intensity.

Is it possible to make these cupcakes ahead of time?

Absolutely. Store cooled, unfrosted cakes airtight at room temperature for up to two days, then frost before serving.

Can I make these dairy-free?

Use plant-based milk and a dairy-free butter substitute for both the batter and frosting to adapt for dairy allergies.

What’s the best way to get fluffy cupcakes?

Ensure all ingredients are at room temperature and avoid overmixing the batter after adding dry ingredients.

How do I achieve strong root beer flavor?

Add a little extra root beer concentrate to both batter and buttercream, tasting as you go for preferred strength.

Do I have to use whipped cream and cherries on top?

Garnishes are optional—these cupcakes shine solo, but whipped cream and a cherry make for a fun finishing touch.

Root Beer Float Cupcakes

Fluffy vanilla treats with root beer notes and creamy, cloud-like buttercream capture a nostalgic soda fountain vibe.

Preparation time
25 min
Cooking time
18 min
Total time
43 min

Category Sweet Treats

Difficulty Easy

Origin American

Yield 12 Servings

Dietary specifications Vegetarian

Ingredients

For the Cupcakes

01 1 1/4 cups all-purpose flour
02 1 teaspoon baking powder
03 1/4 teaspoon baking soda
04 1/4 teaspoon salt
05 1/2 cup unsalted butter, softened
06 2/3 cup granulated sugar
07 2 large eggs, room temperature
08 1 teaspoon vanilla extract
09 1/2 cup root beer soda
10 1/4 cup whole milk
11 1 1/2 teaspoons root beer concentrate

For the Root Beer Buttercream

01 1/2 cup unsalted butter, softened
02 2 1/2 cups powdered sugar, sifted
03 2 tablespoons root beer soda
04 1/2 teaspoon root beer concentrate
05 1/2 teaspoon vanilla extract
06 Pinch of salt

For Garnishing (Optional)

01 Whipped cream
02 Maraschino cherries
03 Paper straws, cut to size

Instructions

Step 01

Prepare Oven and Muffin Pan: Preheat your oven to 350°F (175°C). Line a 12-cup muffin pan with cupcake liners.

Step 02

Combine Dry Ingredients: In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt.

Step 03

Cream Butter and Sugar: In a large bowl, beat the softened unsalted butter and granulated sugar with an electric mixer until the mixture is light and fluffy, approximately 2-3 minutes.

Step 04

Incorporate Wet Ingredients (Part 1): Add the eggs one at a time, ensuring each is well incorporated before adding the next. Stir in the vanilla extract and 1 teaspoon of root beer concentrate.

Step 05

Combine Liquids: In a small bowl, combine the root beer soda and whole milk.

Step 06

Combine Wet and Dry Mixtures: Alternately add the dry ingredients and the root beer-milk mixture to the butter mixture. Begin and end with the dry ingredients. Mix until just combined; do not overmix.

Step 07

Fill Cupcake Liners: Divide the batter evenly among the prepared cupcake liners, filling each approximately 2/3 full.

Step 08

Bake Cupcakes: Bake for 16-18 minutes, or until a toothpick inserted into the center of a cupcake comes out clean. Allow the cupcakes to cool in the pan for 5 minutes before transferring them to a wire rack to cool completely.

Step 09

Prepare Root Beer Buttercream: In a large bowl, beat the softened unsalted butter until creamy. Gradually add the sifted powdered sugar, beating well after each addition. Incorporate the root beer soda, 1/2 teaspoon of root beer concentrate, vanilla extract, and a pinch of salt. Beat until the frosting is light and fluffy.

Step 10

Decorate Cupcakes: Pipe or spread the prepared root beer buttercream onto the completely cooled cupcakes.

Step 11

Garnish Cupcakes: If desired, garnish the frosted cupcakes with whipped cream, a maraschino cherry, and a cut paper straw.

Required equipment

  • 12-cup muffin pan
  • Cupcake liners
  • Mixing bowls
  • Electric mixer
  • Measuring cups and spoons
  • Wire rack
  • Piping bag and tip (optional)

Allergen information

Review each ingredient to identify potential allergens and if uncertain, please consult a healthcare professional.
  • Contains wheat (gluten), eggs, and dairy (butter, milk).
  • If using root beer concentrate, check labels for artificial flavors and verify allergen content if you have sensitivities.
  • Always consult ingredient labels for potential cross-contamination warnings.

Nutritional values (per serving)

These values are provided as a general guide only and shouldn't replace professional medical advice.
  • Calories: 320
  • Fat: 14 g
  • Carbs: 47 g
  • Protein: 3 g