Heat oven to 350 degrees F. Spray a 9-inch cake pan with nonstick cooking spray and line with parchment paper.

Cake

1. In a bowl, whisk together the mascarpone, eggs, olive oil, lemon juice, lemon zest, confectioners’ sugar and limoncello in a large bowl.
2. In a separate bowl, mix the flour, baking powder and salt. Gently stir the dry ingredients into the wet (do not over-mix or the cake will be tough). Pour cake mixture into prepared pan.
3. Bake until the top is golden and a wooden pick inserted into the center of the cake comes out clean, about 35 minutes.
4. Remove from oven and let cool slightly.

Icing

1. In a small bowl, stir the confectioners’ sugar and limoncello together in a small bowl until smooth.
2. Spoon the glaze over the cake and spread with the back of a spoon. The glaze will seep into the cake and add moisture.
3. Sprinkle lemon zest over the top of the cake, if desired.