Preheat oven to 350F. Then, add the oat/almond milk and apple cider vinegar to a large mixing bowl and use a fork or whisk to combine. Let the mixture sit for 5 minutes until the milk slightly curdles and forms a "vegan buttermilk".
Once the milk has curdled, add in the lavender lemon infused sugar, olive oil, apple sauce, and vanilla bean paste/extract. Whisk to combine.
Next, add in the pastry flour, salt, and baking powder. Make sure to add the pastry flour first and pile the other ingredients on top. Then, use the whisk to mix into a thick batter. Do not overmix the batter- some lumps are okay as long as there are no large streaks of flour throughout.
Next, spray the doughnut pan with non-stick spray. Then, use a spoon or large cookie scoop to distribute the batter evenly. Make sure not to cover the raised middle of each doughnut hole with batter.
Bake at 350F for 11-13 minutes. For my oven, I found the doughnuts were best at 12 minutes. The donuts should be firm enough to remove from the pan without breaking, yet not browned and crunchy.
Invert the cooked donuts onto a cooling rack to release. Let cool to room temperature before dipping into the glaze.