Preheat the oven to 350°F. Grease a 9×13″ baking sheet and set aside.
To a large bowl, add the glutinous rice flour, sugar, baking powder and salt. Whisk until well combined.
Add the silken tofu, coconut milk, non-dairy milk, ube halaya, melted butter, and ube extract to a high-speed blender. Blend until very smooth.
Pour the blended mixture into the bowl with the dry ingredients. Whisk together until combined. Transfer to the prepared baking dish and bake for 1 hour, or until golden brown around the edges.
Allow the cake to cool completely before slicing. Enjoy!
