Place ricotta, milk, vanilla extract, and egg yolks in a bowl and mix well.

Stir in sugar, flour, baking powder, salt, and oil, then mix gently until smooth.

In a separate bowl beat egg whites to soft peaks, the fold them into the cheese mixture.

Heat oil in a nine-inch pan till oil is hot. Drop 1/8 cups of batter into the pan and lower heat to medium. Cook on both sides until brown, about two minutes per side.