Step 1

Line a nine-inch pan with parchment paper, grease the sides, and preheat oven to 345F.

Step 2

Mix the flour, baking powder, and baking soda in a medium bowl and set aside.

Step 3

Mix the milk, limoncello, and lemon juice, in a measuring cup and set aside.

Step 4

Rub the lemon zest into the sugar, then mix in the egg on medium-high speed for about one minute.

Step 5

With the mixer on medium-high speed, drizzle in the olive oil followed by the wet ingredients,and mix until incorporated.

Step 6

Reduce speed to low and mix in the dry ingredients.

Step 7

Pour the cake batter into the prepared pan and bake for 40-50 minutes. Do not open the oven door mid-baking, or the cake willlsink at the center. The cake is done when a toothpick comes out dry from the center of the cake.

Step 8

Place the chilled cake over your serving plate and dollop the mascarpone frosting.

Step 9

Use the back of a spoon to spread the frosting over the surface of the cake.

Step 10

Dollop or drizzle the lemon curd over the frosting.