Root beer float cupcakes take the familiar flavor of a classic soda shop float and turn it into a soft homemade cupcake with creamy root beer frosting. They are a good choice for birthdays, summer cookouts, family gatherings, or any time you want a dessert that is a little different from the usual chocolate or vanilla cupcake. The root beer flavor comes through best when both the cupcake batter and frosting include root beer extract or concentrate, giving each bite that sweet, old-fashioned flavor people expect from a float.
Root beer has always had a little extra charm in our house. When my daughter was small, she once asked for “fruit beer” instead of root beer, and the name stuck with us for years. That recipe has that familiar root beer flavor people recognize right away, with a creamy frosting that makes it feel more like the classic float.
Why These Root Beer Float Cupcakes Work
Root beer cupcakes can easily taste too mild if the flavor is only coming from soda. This recipe works better because the root beer flavor is used in both the cupcake batter and the frosting.
- The cupcakes are easy to serve for birthdays, cookouts, and summer gatherings.
- Root beer soda adds moisture and sweetness to the cupcake batter.
- Root beer extract or concentrate gives the cupcakes a stronger flavor after baking.
- The frosting adds the creamy finish you expect from a root beer float.
- A maraschino cherry gives the cupcakes the familiar float-inspired look.
These cupcakes fit well with casual dessert spreads, especially for warm-weather gatherings. They would pair nicely with patriotic cupcakes for summer holidays or cinnamon sugar fried apple sticks when you want a few dessert options that are easy to serve.
Getting the Best Root Beer Flavor
Root beer soda alone usually is not enough to give baked cupcakes a strong root beer flavor. Once the batter is mixed and baked, the soda flavor becomes much lighter. Root beer extract or concentrate helps keep the flavor noticeable without needing to add extra liquid to the recipe.
Extract is usually easier to work with because it is less concentrated. If you are using root beer concentrate, use a smaller amount because the flavor is stronger. Either option works, but the amount should be adjusted so the cupcakes taste like root beer without becoming overpowering.
For the best texture, use softened butter and room-temperature eggs. This helps the batter mix more evenly and gives the cupcakes a softer crumb. King Arthur Baking has a helpful explanation of why room-temperature eggs can make a difference in baked goods.
Baking Tips
A few simple baking details will help the cupcakes turn out soft and easier to frost:
- Mix the batter only until the ingredients come together once the flour has been added. Overmixing can make cupcakes dense instead of soft.
- Scrape down the sides of the bowl so the butter, sugar, and dry ingredients are evenly combined.
- Fill each cupcake liner about two-thirds full so the cupcakes have room to rise without spilling over the edges.
- Expect the recipe to make closer to 18 standard cupcakes, depending on the size of your liners.
- Let the cupcakes cool completely before frosting so the buttercream does not soften or lose its shape.
Root Beer Float Cupcakes
Ingredients
Cupcakes
- ¾ cup butter softened
- 1 ½ cups sugar
- 3 large eggs room temperature
- 1 tbsp root beer extract or 1 tsp root beer concentrate
- ½ tsp vanilla extract
- 2 ½ cups all-purpose flour
- 2 ½ tsp baking powder
- ½ tsp salt
- 1 cup root beer
Frosting
- 1 cup butter softened
- 3 cups powdered sugar
- 1 tsp root beer extract or ¼ tsp root beer concentrate
- 1 tsp vanilla extract
- 2 to 3 tbsp root beer as needed
- Maraschino cherries optional garnish
- Paper straws optional garnish
Instructions
Cupcakes
- Preheat oven to 350°F and line muffin pans with paper liners.
- In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
- In a large mixing bowl, cream butter and sugar until light and fluffy.
- Beat in eggs one at a time, mixing well after each addition.
- Add root beer extract and vanilla extract.
- Add the dry ingredients in batches, alternating with the root beer, and mix just until combined.
- Fill each cupcake liner about ⅔ full.
- Bake for 15 to 20 minutes, or until a toothpick inserted in the center comes out clean.
- Cool in the pan for 10 minutes, then transfer cupcakes to a wire rack to cool completely before frosting.
Frosting
- Beat butter, root beer extract, and vanilla extract until smooth and fluffy.
- Gradually add powdered sugar, mixing until fully combined.
- Add root beer, 1 tbsp at a time, until the frosting reaches a pipeable consistency.
- Transfer frosting to a piping bag and frost cooled cupcakes.
- Top with a cherry and a small cut paper straw, if desired.
Notes
- Root beer extract or concentrate gives the cupcakes the strongest flavor. Root beer soda alone will be much more subtle.
- Do not frost cupcakes until they are completely cool.
- Store frosted cupcakes in an airtight container in the refrigerator for up to 3 days.
- Let refrigerated cupcakes sit at room temperature for 15 to 20 minutes before serving.
- Unfrosted cupcakes can be frozen for up to 2 months. Thaw before frosting.
Nutrition
Nutrition information has been calculated using an autogenerating online calculation and is intended for informational purposes. For accurate nutritional information, you should calculate the nutritional information with the actual ingredients used.
Decorating the Cupcakes
A swirl of root beer frosting and a maraschino cherry is all these cupcakes need. If you want to lean into the root beer float look, you can add a short paper straw after frosting. Just make sure the straw is decorative and removed before eating. For a dessert table, place the cupcakes on a cake stand or tray shortly before serving. They also work well with richer desserts like carrot cake cupcakes or a cold dessert drink such as a salted caramel brownie float.
These root beer float cupcakes bring the flavor of a classic soda shop treat into a soft cupcake topped with creamy root beer frosting and a cherry.
Make-Ahead and Storage Tips
The cupcakes can be baked a day ahead and frosted before serving. Once they are completely cool, store the unfrosted cupcakes in an airtight container at room temperature.
Frosted cupcakes should be stored in an airtight container in the refrigerator for up to 3 days. Let them sit at room temperature for about 15 to 20 minutes before serving so the frosting has time to soften. FoodSafety.gov has useful cold food storage guidelines for general storage questions.
Unfrosted cupcakes can also be frozen for up to 2 months. Wrap them well, place them in a freezer-safe container, and thaw completely before frosting.