Either buy Dulce de Leche ready-made or prepare it yourself. Preheat the oven to 220 ° C. Grease the twist-off glasses with a capacity of approx. 125 ml.
For the filling or the core, mix the specified portions of Dulce de Leche and Bailey`s well and set aside.
For the dough, beat the eggs with the sugar until frothy. Mix in the flour, butter and salt. Add the indicated portions of Dulce de Leche and Bailey`s and stir to a smooth batter.
Fill the glasses about halfway with the batter and bake for 6 minutes at 220 ° C. Take out of the oven and place a teaspoon of the set aside Bailey`s mixture in the middle. Bake for another 2 minutes at 220 ° C. Take out of the oven and close the jars immediately. Put in a cool place.