You need biscuits OREO (or others), chocolate cake dough and 1 can sweeten condensed milk. Start with the condensed milk. Put the can into a pot and cover with water about 3 hours to get this milk caramel. Before open the can, cool well. For the cake dough you need an egg, a tea cup of sugar, a soupspoon of cocoa, ½ teaspoon of oil, a teaspoon of baking soda, a tea cup of flour and ½ tea cup of yoghurt. Mix all the liquid ingredients and then add the dry ones. It’s not necessary to stir with a mixer; you can do it with an egg-whisk or a fork. Put on the bottom of a muffin form one biscuit, then put some of the caramel, put a biscuit, and caramel again. The as prepared muffins pour over from all the sides, with some spoons of the cake dough. Bake in a preheated oven to170 degrees till readiness. Bon appetite!