For the chocolate cakes, melt the chocolate with the butter in a water bath. Mix the sifted flour with the almonds.
Beat the eggs with the sugar and a pinch of salt. Add the chocolate and stir in the flour mixture. Butter the ramekins and dust with cocoa powder.
Fill 2/3 of the chocolate mixture into the ramekins. Refrigerate for at least 1 hour. Use a piping bag to pipe the dulce de leche into the center of the chocolate mixture.
Bake in a preheated oven at 180 °C for about 15 minutes. Remove from the oven, allow to cool briefly, remove from the mold and serve while still warm with vanilla ice cream.