Preheat your oven to 450 degrees. Grease or line a cookie sheet with a Silpat and set it aside.
Make your vegan buttermilk by taking a glass measuring cup, adding 1 cup of vegan milk and 1 TB of vinegar, stir and let this thicken.
Make your filling by combining the ingredients and set aside.
Take a medium-size bowl and mix the flour, baking powder, salt, and brown sugar. Now, take your vegan butter, cut it into small pieces, and add to the flour mixture. Use a pastry cutter and cut the butter in until combined. Now add the oil and ¾ of the buttermilk. Mix this with a wooden spoon, being careful not to over-mix. Take the shaggy dough and place it on a Silpat; take half of your filling mixture place it on the dough and fold it, then take the rest of the filling and put it on the now-folded side, and fold again. *look at the pictures above if this is confusing. Create a disk with your dough and hand pat it down; you don't need to use a rolling pin; you want it about an inch thick. Use your round biscuit cutter and cut out biscuits until it's gone; you will need to reshape them as you go. Place the biscuits on the Silpat evenly spaced and bake for 10-12 minutes.
While baking, make the glaze. Take a small bowl and combine the ingredients until smooth.
Once the biscuits are baked, wait a minute or two and then glaze them. These are best on the same day.