Prepare a baking pan with parchment paper on the bottom, flour and butter on the sides
Instructions
In a large bowl, add the flour and baking powder (also the salt)
Whisk so everything is well distributed
Now with a large bowl (or bowl of your stand mixer) and a medium bowl, separate the white and yolk of the eggs, whites going into the large bowl, yolks into the medium
With your stand mixer or electric mixer, beat the egg whites until they start getting lighter and fluffier
As you beat, slowly add about ¼ cup of the sugar until stiff peaks form
Add the rest of the sugar to the bowl with the yolks, beat until the color lightens
Add the milk to the yolks and sugar and beat until homogeneous
Add the yolk mixture to the flour mixture and gently mix until combined
Add half of the beaten egg whites to the flour mixture, gently mix until combined
Add the rest of the beaten egg whites and even more gently mix until combined
Pour the batter into the pan
Bake for around 30 minutes depending on the thickness of your cake (dependent on the baking pan you are using), once the cake starts pulling off the edges and a skewer inserted in the middle comes off clean, it is done
Enjoy your boymoder egg whites cake :3
Notes
Do not overbeat the mixture after the flour is added! If you develop the proteins on the flour, you're cake might fall after coming out of the oven
Measure the flour properly, adding more flour than intended might cause the cake to fall! (See: measuring flour)
Be a good boymoder and crack the eggs in a separate bowl so no shells get into your precious cake!