Beat the eggs with a mixer until nearly whitened and then add the sugar. Next comes the oil, flour with baking powder (stir with a spatula before adding the flour).
Pour the cake batter into a cake form 9 1/2″ (24 cm) in diameter, laid out with baking paper. Bake in a preheated 356°F (180 °C) oven for 45-50 min. until your toothpick comes out dry when you poke it in the middle.
Bake with the bottom element on until nearly done. Turn on both elements for the final 5-10 min. of baking.
Cut the well cooled cake layer into 3 parts and use to prepare your homemade cake.