Dump the Sweetened Condensed Milk into a medium pot

Use the empty can to measure two cans of milk into a separate bowl.

Add 1/2 cup cornstarch into the milk and stir to dissolve thoroughly with a whisk.

Once the cornstarch is dissolved in the milk, add it to the sweetened condensed milk and warm on medium heat while stirring constantly until it thickens. {Use a whisk so that the cornstarch doesn't ball up}.

After the mixture thickens up, remove it from the heat and add the cream and chocolate.

Stir with a wooden spoon until the chocolate is melted and the cream is mixed in.

Pour over your cooled cake and spread.

Cool completely in the fridge before eating.