Cream: First, in a bowl, combine the milk, heavy cream, powdered drink mix, and sweetened condensed milk. Then, whisk until you achieve a creamy consistency.
First layer: Next, pour the cream into the dish and spread it evenly on the bottom.
Soak the biscuits: After that, dip the biscuits in milk and arrange them on the bottom of the dish.
Second layer: Now, add another layer of cream over the biscuits.
Decorate with dulce de leche: Finally, put the dulce de leche in a piping bag and create designs, such as zig-zags, on the dessert.
Refrigerate: Finish by refrigerating for approximately 1 hour, or until firm.
Tips: To make decorating easier, warm the dulce de leche before putting it in the piping bag. You can substitute the dulce de leche with melted chocolate, chocolate shavings, or sprinkles.