These easy Margarita Cupcakes are fluffy and moist with tons of lime flavor. Spiked with tequila, these boozy cupcakes taste just like your favorite summer cocktail but are perfect for your dessert table.
Preheat oven to 325 degrees and line a standard muffin tin with paper liners.
Add butter and sugar to stand mixer with a paddle attachment and beat for 2 minutes until fluffy (medium speed).
Add one egg at a time until mixed.
Add in tequila and lime juice and zest (this may look like curdled milk it's fine and will smooth out).
In a separate bowl whisk together flour, baking powder, and salt.
Add one cup at a time of the flour mixture to the mixing bowl of wet ingredients.
Add a little buttermilk in between each cup of the flour mixture.
Spoon the batter into each cupcake liner filling half way.
Bake for 25 about minutes.
Remove from oven and let cool for an hour or so before icing.
For Frosting:
Place room temperature butter into the mixing bowl fitted with a paddle attachment.
To the mixing bowl, add the powdered sugar one cup at a time, on low speed until all sugar is added.
Turn the mixer up to medium speed and add in tequila, lime juice, and lime zest.
Mix well until the frosting is stiff (if too thin, add more powdered sugar - if too thick, add more lime juice)
Put frosting in an icing bag with piping tip or sandwich bag with the corner cut to pipe the cupcakes or use an offset spatula.
Place a slice of lime on top to garnish.
Notes
The tequila and lime may make the batter look curdled but it is fine, it will smooth out. You can use blanco or reposado tequila in this recipe. Or leave it out if you don't want them boozy. Just replace the amount of tequila with water or another liquid.