Anyone who loves root beer will adore these Root Beer Float Cupcakes. Soft, tender cupcakes are made with real root beer and a touch of root beer extract, then finished with a creamy root beer buttercream that captures the flavor of a classic float.
I like to top each cupcake with a maraschino cherry or a root beer barrel candy for a nostalgic, playful look. For a fun presentation, halve small decorative straws and tuck one into the frosting of each cupcake.
Root Beer Float Cupcakes
These Root Beer Float Cupcakes are an easy, crowd-pleasing dessert for summer barbecues, birthday parties, or any occasion where you want a playful, soda-inspired treat. The cake uses a white cake mix base combined with root beer for a light texture that lets the root beer flavor shine, while the homemade root beer buttercream adds rich, creamy sweetness.
Key Ingredients
- White cake mix (15.25-ounce box) – a neutral base that soaks up the root beer flavor.
- Butter – 1/2 cup melted for the cake; 1/2 cup room-temperature for the frosting.
- Root beer – 1 cup for the cake. Any brand will work.
- Eggs – 3 large, preferably at room temperature.
- Root beer extract – 1 teaspoon in the cake and 1 1/2 teaspoons in the frosting for a concentrated flavor boost (optional but recommended).
- Powdered sugar – about 4 cups for a smooth, stable buttercream.
- Milk – 2–3 tablespoons to adjust frosting consistency (whole milk preferred).
- Vanilla extract – 1 teaspoon for the frosting.
- Decorations – maraschino cherries and/or individually wrapped root beer barrel candies.
How to Make Root Beer Float Cupcakes
- Preheat and prepare pans. Preheat the oven to 350°F (175°C). Spray two 12-cup cupcake pans with nonstick spray or line with cupcake liners.
- Mix the cupcake batter. In a medium bowl whisk together the white cake mix, melted butter, root beer, eggs, and 1 teaspoon root beer extract until smooth and slightly fluffy.
- Portion the batter. Use an ice cream scoop to fill each liner about two-thirds full.
- Bake. Bake 20–25 minutes, or until a toothpick inserted into the center comes out clean. Remove from oven and cool to room temperature on a wire rack.
- Make the frosting. In a stand mixer or with a hand mixer, beat 1/2 cup room-temperature butter until light and fluffy. Add 1 1/2 teaspoons root beer extract, 1 teaspoon vanilla, 2–3 tablespoons milk, and half the powdered sugar; mix slowly until combined. Add the remaining powdered sugar and increase speed to medium-high; whip about 2 minutes until smooth and airy. Adjust milk or powdered sugar to reach your preferred piping consistency.
- Decorate. Pipe swirls of frosting onto cooled cupcakes using a large piping tip. Top each cupcake with a maraschino cherry or a root beer barrel candy. Serve immediately or store until ready to enjoy.
Frequently Asked Questions
Can you freeze these cupcakes? Yes. Unfrosted cupcakes can be frozen for up to two months in an airtight container. Frosting also freezes well for up to two months; store separately. Thaw in the refrigerator overnight and rewhip the frosting briefly before using.
Is root beer extract required? It’s not required, but the extract intensifies the root beer flavor. Without it the cupcakes will still be tasty, but the root beer character will be milder.
Can I make this batter into a cake? Yes. The batter can be baked in three 9-inch round pans to make a layered cake; baking time will be longer, so test with a toothpick until it comes out clean.
Storing and Freezing Instructions
- Refrigerator: Store frosted cupcakes in an airtight container in the fridge for up to 4 days. Bring to room temperature before serving for the best texture and flavor.
- Freezer: Freeze unfrosted cupcakes for up to 2 months in airtight containers or freezer bags. Thaw in the fridge overnight before frosting. Frosting freezes well in freezer bags for up to 2 months; thaw and rewhip before use.
Recipe Summary
- Yields: 24 cupcakes
- Prep time: 10 minutes
- Cook time: 20–25 minutes
- Total time: about 35 minutes
More Easy Cupcake Recipes
- Zucchini Cupcakes
- Carrot Cake Cupcakes
- Pumpkin Cupcakes
- Mixed Berry Muffins
- Cinnamon Buttercream Frosting
- Chocolate Buttercream Frosting
- Cyclops Cupcakes
- Graveyard Cupcakes
These soft, tender Root Beer Float Cupcakes are a simple, nostalgic dessert that both kids and adults enjoy. Made with real root beer and finished with a whipped root beer buttercream, they bring the flavor of a soda-fountain classic to a handheld cupcake.