Preheat oven to 350 F.
Line the bottom of a 9-inch cake pan with parchment paper.
Brush the sides of the pan with a bit of olive oil.
In a large bowl, whip egg yolks and ½ cup of sugar.
Continue to whip, until pale yellow and doubled in volume.
In a separate bowl, whisk together, olive oil, lemon juice and zest.
Add whipped yolks and gently mix with rubber spatula.
Whip egg whites with ¼ cup of sugar to make a soft peeked meringue.
Fold meringue into egg yolk mixture, using a rubber spatula.
Sift in S.M.A.R.T Blend flour. Gently fold in using a rubber spatula.
Pour batter into the cake pan.
Bake at 350F for 35-40 minute, until toothpick inserted in the comes out clean.