Topping
Into a saucepan, start by adding the milk, the corn starch, the sugar and the vanilla essence, mix very well until combined, bring to medium-low heat and stir until it thickens and turns into a cream.
Turn off the heat and add the butter, mix well until melted.
Pour this cream into dessert bowls, distribute the amount evenly between them. Set aside in the fridge.
In a pan over low heat, put the sugar and let it melt a little, when it really starts to melt, get a spatula and stir it into a caramel sauce.
As soon as it turns into a caramel sauce, add the butter and stir again until the butter fully melts.
Gradually add to this carame sauce the milk mixed with the corn starch. Once you've added all the milk, stir it nonstop until it thickens.
Take the dessert bowls out of the fridge and pour some of this cream into each bowl, after that, take them back to the fridge and let them chill for 2 to 3 hours.
Garnish with whole or crushed walnuts, to taste.
Serve.