Make pineapple jam: Cook the grated pineapple over low heat, stirring often, until most of the liquid evaporates; then add

Blend margarine and butter using a mixer. Pour in sugar, eggs, sweetened condensed milk, and vanilla. Mix well.

Sift and add some of the flour, powdered milk, and cornstarch. Stir in the remaining flour, milk, and cornstarch with a spatula until a ball forms.

Shape the dough into balls and add jam using a measuring spoon.

Preheat the oven to 140°C (top heat) and bake the dough on the top layer at 140°C for 20 minutes. Let cool, then brush the dough with the glaze.

Bake again on the bottom layer at 140°C for 15 minutes. Brush again, then bake for another 3 minutes.