Beat the eggs with granulated sugar. We start at a low speed of the mixer and gradually increase. The mass should become lush and white.

In another bowl, melt the butter.
Mix the flour with cocoa well, gently combine with the eggs, beat again.
We continue to beat the mixture and pour oil into it in a thin trickle. If it gets too hot, the eggs will just curl up. Therefore, it should completely melt, but not boil.

Next, it is necessary to let the mixture stand for two hours in the cold.

To bake this cookie, you need a special silicone mold. It is she who gives the classic form to Madeleine.
We lightly lubricate the form with oil, fill it not to the top, leave about a centimeter.

Preheat the oven to 180 degrees, bake for 10, maybe 12 minutes, it will be seen when you already need to take it out. Depending on the size of the mold, you will be able to bake all the cookies in about two times.

After baking, you need to cool them on the grill.
Bon appetit.)