So typically I would NEVER use boxed cake. NEVER. But when it comes down to basic chemistry, the reaction of adding alcohol to my flour, baking soda and baking powder mixture, would end up with my batter looking really good, until after I’m done baking. This is when the middle of the cupcake sinks.
Now the only way to avoid that dilemma is to make a very strong flavored margarita cupcake, use Silver cake batter with non-alcoholic margarita mix to make cupcakes, once baked and cooled, brush with tequila. This is a long process, and you must use extremely good tequila since that’s the flavor that will stand out the most.
Mini Lime Margarita Cupcakes – 48 mini cupcakes
1 cup liquid Margarita mix
1/4 cup good tequila
1 box white cake mix (about 1 lb and 2.25 ounces)
3 large egg whites
2 tablespoons vegetable oil
1 tablespoon freshly grated lime zest
1 cup (2 sticks) unsalted butter, room temperature
5 to 6 cups powdered sugar
2 Tbs fresh lime juice
1/8 tsp salt
1 tsp grated lime zest
Green gel paste
Small lime slices for garnish or green sugar
Preheat the oven to 350 degrees F. Spray mini muffin pan with baking spray.
To prepare the cupcakes:
Whisk together margarita mix and tequila in a measuring cup.
Using a hand mixer, or whisk, in a large bowl, blend cake mix, egg whites, vegetable oil, lime zest and margarita mix, continue to blend for two additional minutes. Batter should be smooth.
Spoon the batter into cupcake pan, about 2/3 full. Bake for 15 minutes, or until toothpick is inserted in the center and it comes out clean. Allow cupcakes cool for about 10 minutes in the pan, remove and place on cooling rack to cool completely.
To prepare the buttercream:
Once the cupcakes are completely cooled, prepare the buttercream. Place butter in a large bowl and beat with electric mixer until butter is fluffy.
Add 5 cups of powdered sugar, salt, lime juice, and lime zest. Mix until thick and creamy. Keep adding more powdered sugar until the frosting is a good piping consistency. Mix in a tiny amount of green gel paste if you’d like the frosting to have a green tint. If you prefer just spread buttercream, or prepare pastry bag with a large star tip.
Dip lime slices in green sugar or plain sugar. Garnish the mini cupcakes with lime wedges, sprinkle with green sugar.
If you are making these a day ahead, place them in a tightly sealed container.