Melt the vegan butter in a small bowl and set it aside to cool slightly.
Warm the oat milk until just warm to the touch, never hot.
In the bowl of your standing mixer, combine the warm water, warm almond milk and sugar.
Stir, then sprinkle the yeast over the surface and leave it for about 5 minutes, until soft and foamy.
Pour the melted butter into the yeast mixture, then add the flour and salt on top.
Bring everything together by kneading it on medium-low, until a rough dough forms.
Knead for 5–10 minutes on medium-high, until smooth and elastic. If you press it with a finger and it slowly springs back, it’s ready.
Shape the dough into a ball.
Lightly oil a large bowl, place the dough inside, cover, and leave to rise in a warm place until doubled in size.
Line a baking tray with baking paper.
Once the dough has risen, tip it onto an oiled surface and divide into 6 equal pieces, then shape each into a long bun.
Place them on the tray, leaving space between each one. Brush each one with some oat milk.
Cover with cling film, and let them proof again for 50–60 minutes in a warm place.
Preheat the oven to 190°C.
Mix the maple syrup and oat milk together to make the glaze.
Once the buns have risen, brush with the glaze generously.
Bake for about 20 minutes, until deeply golden and soft, with a shiny top.
Let them cool slightly, then fill generously and enjoy while still warm.