
Tiramisu cupcakes for two: instead of a big pan of tiramisu, make these vanilla cupcakes with an espresso Kahlua soak and mascarpone frosting!
Preheat the oven to 400, and line four cups in a muffin pan with paper liners.
In a medium bowl, beat with an electric mixer the butter, sugar and vanilla. Beat until light and fluffy, at least 30 seconds.
Add the egg white and beat until combined.
Next, beat in the sour cream.
Finally, sprinkle the flour, baking soda and salt evenly over the batter, and then beat until just combined.
Divide the batter between the cupcake liners, and bake on the middle rack for 16-19 minutes. When done, the tops will spring back, and a toothpick inserted will come out clean. (They will brown nicely on top because they're made with butter, not oil).
Let the cupcakes cool.
Meanwhile, stir together the espresso and Kahlua.
Just before serving, poke holes in the cupcakes using a toothpick, and slowly drizzle the espresso mixture into each cupcake.
Then, beat together all of the frosting ingredients until light and fluffy.
Spoon the frosting into a piping bag fitted with a 1MM Wilton tip and pipe the frosting on the cupcakes (or, just use a butter knife to frost the cupcakes, too!)
Top each cupcake with a chocolate-covered espresso bean and serve.