Fresh-Squeezed Mimosa Cupcakes

Make Fresh-Squeezed Mimosa Cupcakes: bright orange cupcakes with champagne buttercream, perfect for brunch or celebrations.

Ingredients

• 1 and 3/4 cups (207g) cake flour (spooned & leveled)
• 1/2 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
• 1 cup (200g) granulated sugar
• 3 large egg whites
• 1 teaspoon pure vanilla extract
• 1 and 1/2 Tablespoons orange zest
• 1/3 cup (80g) full-fat sour cream*
• 2 Tablespoons (30ml) juice from a valencia orange*
• 1/2 cup (120ml) champagne (use your favorite)
• 3/4 cup (180ml) champagne (use your favorite)
• 1 cup (16 Tbsp; 226g) unsalted butter, softened to room temperature
• 4 cups (480g) confectioners’ sugar
• 1 teaspoon pure vanilla extract
• optional garnish: orange slices and gold sprinkles

Instructions

Step 1: Preheat and prepare pans

Preheat the oven to 350°F (177°C) and line a 12-count muffin pan plus a second small pan with 3 additional liners so you have about 15 liners ready. Set the pans aside on the painted pine wood surface; this simple staging keeps the workflow tidy and ensures everything is at hand when the batter is ready to be portioned.

Step 2: Combine the dry ingredients

Whisk the cake flour, baking powder, baking soda, and salt together in a bowl until evenly distributed and light in texture. Sifting or aerating the flour gently will help create a tender crumb in these cupcakes, so take a moment to break up any lumps and leave the dry mix fluffy and uniform.

Step 3: Cream butter and sugar, add whites and flavor

Beat the softened unsalted butter on high until smooth and creamy, then add the granulated sugar and continue beating until the mixture is light and aerated. Scrape the bowl as needed, then add the egg whites and vanilla, beating until just combined. Fold in the orange zest and sour cream so the batter has bright citrus flecks and a silky, slightly tangy backbone.

Step 4: Finish the batter with dry ingredients and bubbly liquids

With the mixer on low, add the dry ingredients until they are just incorporated, then slowly pour in the fresh orange juice and champagne while the mixer runs on low. The batter should finish as a slightly thick, pale yellow batter studded with orange zest and tiny champagne bubbles — smooth but not overworked; whisk by hand at the end if needed to catch any stubborn lumps.

Step 5: Portion and bake

Spoon or pour the batter into the liners, filling each only two-thirds full so they rise without spilling. Bake for 18–21 minutes (mini cupcakes about 11–13 minutes) or until a toothpick comes out clean. Remove from the pans and allow the cupcakes to cool completely on a cooling rack before frosting so the buttercream remains stable.

Step 6: Reduce the champagne

Bring the champagne to a boil in a small saucepan, then simmer until reduced to about 1/4 cup, roughly 7–10 minutes. Cool this reduction completely to room temperature or chill briefly; the concentrated champagne will add a bright, aromatic lift to the frosting without thinning it.

Step 7: Make the champagne buttercream

Beat the softened butter until completely smooth and creamy, then add the confectioners’ sugar one cup at a time, starting on low and finishing on high speed so the frosting is pillowy and cohesive. Beat in 3 tablespoons of the reduced champagne and the vanilla; taste and add the remaining reduced champagne as needed to reach a silky, spreadable consistency. Adjust with a pinch of salt if you prefer contrast.

Step 8: Frost and garnish

Pipe or spread the buttercream onto the cooled cupcakes, creating generous swirls of creamy, ivory frosting. Finish each cupcake with a thin fresh orange slice and a scattering of delicate gold sprinkles for a festive, zesty note.

Notes

• Reduce the champagne slowly in a shallow pan to avoid burning and concentrate flavor.
• Make the cupcakes a day ahead and frost the morning of serving for best texture.
• Use room-temperature butter and sour cream for a smooth batter and frosting.
• If baking at altitude, reduce baking powder by 1/8 teaspoon and increase oven temp by 15 degrees F.