Combine the cornstarch, milk, and sugar in a saucepan and stir, then place the mixture on the stove and stir continuously until it thickens into a cream.

Once done, add the Nestlé cream and mix well to combine.

In a non-stick baking pan, arrange the puff pastry dough in a circular shape, place a spoonful of cream on top, and then add a pineapple slice.

Bake the pastry in the oven until cooked, about 5 minutes.