How to cook
Beat the eggs and sugar. Add the yogurt and oil and beat once again.
The bananas are finely chopped and added to the mixture. The soda, baking powder and vanilla are added to the flour.
The flour is gradually added to the mixture, while making sure to stir the mixture constantly. Prepare the cake pan.
Grease it with oil and sprinkle it with flour. Pour the cake batter into the cake pan.
Bake in a preheated oven at 360°F (180 degrees). It takes about 40 minutes to bake. Check to see if it is fully baked with a toothpick. If it comes out dry, the sponge cake is ready.