For the Dulce de Leche:
- Combine the butter and brown sugar in a saucepan over low heat until melted.
- Add the condensed milk, increase the temperature to medium heat and stir consistently, allow it to come to a boil and thicken for a few minutes. Remove from heat.
For the crust:
- Crush biscuits into a fine powder by using a food processor, or by hand with a rolling pin, set aside.
To assemble:
- With an electric mixer, whip the heavy cream until soft peaks form.
- Layer the cups with a full tablespoon of crust, a spoonful of Dulce de Leche, kiwi slices and cream, repeat this process until the cup is fully assembled.
- Keep in the fridge until ready to serve.