Step 1

Pre-heat oven to 350F (180C).  Grease and flour a 9 inch (23 cm) bundt pan or 8 inch (20 cm) cake pan.

Step 2

In a medium bowl whisk together the flour, baking powder and salt.

Step 3

In a medium bowl beat until stiff peaks appear the 3 egg whites.

Step 4

In a large bowl beat the 4 yolks and sugar until light and creamy (about 3-5 minutes).  Then add the vegetable oil, limoncello and zest,  beat until smooth.

Step 5

Stir the flour mixture into the yolk mixture and combine, then gently fold in the egg whites until combined.  Spoon into prepared cake pan. Bake for approximately 25-30 minutes or until toothpick comes out clean.  Let cool before dusting with powdered sugar.  Enjoy!