Place the oat milk, aquafaba and vegan butter into a microwave-safe bowl and zap for about 30-45 seconds. You can warm this combination in a small saucepan on top of the stove, as well. You want your mixture to be just around 100 degrees, as if it gets much hotter than that, it will kill the yeast.

Pour the warmed milk/butter mixture into the workbowl of your stand mixer (you can do this by hand as well, it just is more work), and add the sugar. Sprinkle the yeast overtop and leave it for 5-10 minutes.

At the end of the 5-10 minutes, the yeast should have bloomed. It will smell yeasty and will be a bit frothy and bubbly.

Equip the mixer with a dough hook and add 1/3 of the flour. Mix, then add the second third of the flour and finally the last of the flour along with the salt.

Continue mixing, scraping down the sides if needed, for about 5-8 minutes, until the dough is smooth and elastic, and clings to the dough hook in one ball. You can also complete this step by hand-kneading if you don't have a mixer.

Shape the dough into a ball, place in a bowl, cover and allow to rise in a warm place for about an hour, or until doubled in size.

Meanwhile mash together the cooked ube (I simply peeled them, then steamed them in my instant pot for about 20 minutes, then allowed to cool), the coconut oil, the coconut milk, and one tablespoon of coconut sugar until smooth and incorporated.

Remove the dough from the bowl and roll out into a large rectangle, about 1/4" thick.

Spread a thin layer of the ube filling all over the dough, then sprinkle with the remaining sugar and coconut.

Now roll up the dough, along the longest side, like a jelly roll. Pinch the seam to seal.

Preheat your oven to 350 degrees, and prepare a bundt pan by greasing it with vegan butter.

With a sharp knife, cut all the way down the middle of the roll, leaving a 2" header at the top that is not cut. Now "braid" the two halves over each other, flipping them over and under, creating a wavy pattern.

Place the bread (purple side up, of course) in a circle in your bundt pan, ad pinch the two ends together. If you don't have a bundt pan, just make it in a regular cake pan, forming the dough into a circle.

If you like brush the top with a little oat milk that has a little bit of sugar dissolved in it for additional browning.

Bake in preheated oven for about 25 minutes, or until golden on top. Sprinkle with powdered sugar to serve.