In a bowl, whisk flour, powdered milk, baking powder, and salt.
In another bowl, combine water and sugar. Stir until well dissolved.
Add the vegetable shortening and ube jam. Pour sugar water and mix until well incorporated. Transfer the mixture into the prepared pan. Bake for 20-30 minutes.
Combine water, sugar, and ube flavoring. Stir until sugar is well dissolved. Set aside.
After baking, allow the cake to cool slightly before cutting into 2-inch bars. Dip each piece into the ube syrup then toss it desiccated coconut.
Serving Size 12 pieces