Into a saucepan, add the condensed milk and the corn starch, mix until combined. Add the table cream, the milk powder, mix it all together very well. Add the milk, mix and turn the heat on medium, stir it nonstop until it thickens.
To assemble, into a glass dish, add the first layer of cream and spread. Then make a layer with the corn starch biscuits, a layer with the chopped strawberries, then add the cream again. Repeat this process until you've topped it all with a layer of cream.
Take it to the fridge and let it chill for 3 to 4 hours.
Finally, sprinkle some milk powder all over it.