01 -
Melt the butter, then pop it in the fridge for about 20 minutes to reach room temp.
02 -
Stir melted butter with both sugars for a minute. Toss in the egg and vanilla, and mix just till smooth.
03 -
Stir the flour, baking soda, baking powder, salt, and espresso powder together. Add to the wet stuff and mix till they're barely blended.
04 -
Roll 11 cookie dough balls using about 2 tablespoons each. Let them chill in the fridge for an hour.
05 -
Bake them at 180ºC/355ºF for 10-11 minutes. Do 6 cookies on one tray, cool them for 3 minutes, then move to a rack.
06 -
Beat mascarpone, cream, confectioners sugar, agave, and a splash of vanilla till they're thick enough to hold stiff peaks.
07 -
Swirl mascarpone cream onto the cooled cookies with a piping bag. Sprinkle a little cocoa powder over the top with a sieve.