Combine the heavy cream, condensed milk and vanilla extract. DO NOT whip. Just mix until combined.
Pour the mixture into an ice cube tray or silicon mold and freeze till solid.
Transfer ice cubes into a food processor along with 1 - 2 tbsp of milk. Add the milk as you go - don't add too much or you'll end up with a milkshake! Pulse until you reach a creamy soft serve consistency.
Mix in your favorite toppings and serve immediately.