In a medium saucepan, toast the all-purpose flour. Be sure to stir frequently to prevent burning. You will know its done when it turns a light brown color. Let it cool for a few minutes.
In a large mixing bowl, mix together toasted flour, caster sugar, powdered milk, and salt. Caster sugar gives the polvoron a more ideal texture but you can substitute granulated sugar.
Add in the warm melted butter and fruity pebbles. Mix until it is fully incorporated. The mixture should be crumbly and dry.
Use the mold to shape your cookie on a plate, baking sheet, or other flat surface.
Let the cookies cool to room temperature and solidify. You can also put in the fridge or freezer to accelerate the process but it shouldn't take too long otherwise.
Wrap in cellophane plastic or just eat right away!
