Process all ingredients into a batter, at the very end fold in any amount of chocolate droplets / chocolate sprinkles (depending on how chocolate you want it to be).
Grease and crumble 5 tumbler glasses (450 ml each) and then pour in the batter (about halfway).
Bake in the preheated oven at 180 degrees for about 45 minutes (top and bottom heat).
Use a stick test to check from time to time how far the cake is.
Take the jars out of the oven and close them immediately.