Recipe in 5 minutes! Special filling! Very quick and delicious

Recipe:
200 g (1 stick) butter at room temperature.
Beat for about 3 minutes.
370 g (1 can) sweetened condensed milk at room temperature.
Add gradually in small portions, stirring until the mixture is smooth.
375 g (1 pack) breakfast cereal.
Stir until the dough is smooth.
A baking tray with a diameter of 22 cm.
Line the bottom and sides of the baking tray with baking paper or cling film.
Place in the refrigerator until completely frozen.
Thank you for watching my video until the end!