My friend Marta who is from Argentina gave me this recipe. Not only is it fast and easy to prepare, but it's absolutely delicious. Highly recommend it!
6 eggs, separated
1/2 c sugar
1/2 c flour
1 tsp baking powder
1 tbsp vanilla
Whip egg whites until stiff, then add egg yolks and continue whipping until it's all mixed. Add the rest of the ingredients and continue beating for 2 or 3 minutes. Line a cookie sheet with aluminum foil and then grease it with cooking spray so the cake doesn't stick. Pour the batter and make sure it spreads evenly. Bake for about 10 minutes at 350 degrees. Follow the procedure as with any jelly roll (roll cake and let cool). When cake is cooled, unroll and spread dulce the leche or your favorite jelly. Roll back again, and slice it. You can sprinkle the slices with powdered sugar or leave them like that. Place the pionono in the fridge for about 10 minutes and then you can serve it.
This is the dulce de leche I buy. It's from Nestle and it comes in this can. You can find it on the latin section of your grocery store by the sweetened condensed and evaporated milk (if not, check by the regular baking products aile).