Fantastique! These came out far better than I thought they would. Highly tasty specimens with soft, moist cake and tart, creamy frosting. I didn't have the 2 cups of mascarpone required, so I used one cup mascarpone and 1 cup of Temptee whipped cream cheese for the frosting. I just guessed on the agave nectar since the recipe called for 1/3 cup of sugar based on only mascarpone. The two lemons worth of zest really worked magic on the frosting and played very well against the carrot cake. I would definitely make these again. They also were a big hit with John's Aunt Lorraine and Uncle Jim.