Simple pineapple cake

This is very simple to make three ingredients pineapple cake that my husband adores. Prep time is about 20 minutes and all you need is:

500 ml of creme patisserie, 500 gr of canned pineapple pieces and 300 gr of ground biscuits. Put ground biscuits in a bowl and pour half of pineapple juice over it, mix  together with spoon and leave aside. Divide creme patisserie in two bowls in ratio 2/3 and 1/3. First whisk  smaller portion for topping, then larger one for the base. In later add soaked biscuits and whisk for one more minute.
Spread base on a cake stand, put pineapple on base and top with topping.

Bon appétit!