Dough: Combine lukewarm oat milk with yeast. Set aside until foamy. In a large bowl whisk together the all-purpose flour, granulated sugar and salt. Combine the foamy oat milk with the cooled melted butter. Pour over the dry ingredients. With a spatula, give everything a mix together. Once it forms into a dough, transfer it onto a clean workspace dusted with a little flour. Knead the dough for 5-10 minutes or until it no longer sticks to clean dry hands. Grease a large clean bowl with vegan butter. Shape the dough into a ball, place it in the centre, grease the tops of the dough with a little more butter and then cover it with a tea towel. Set aside in a draft-free zone for around 45 minutes or until doubled in size.
Filling: In a small bowl combine light brown sugar, ground cinnamon, ground ginger and ground nutmeg. In another bowl combine the softened room-temperature vegan butter with molasses. Transfer the dough to a lightly floured surface. Roll into a 12×18-inch rectangle. Brush the vegan butter mixture all over the rectangle. Sprinkle over all the ginger-cinnamon sugar. Roll into an 18-inch log. Cut into 12 rolls using dental floss. Cover the rolls with the tea towel and set aside until doubled in size – around 45 minutes.
Bake: Preheat oven to 200°C/390°F. Combine 1 tbsp of oat milk with 1/2 tsp of maple syrup, and brush over the rolls. Bake for 25-30 minutes.
Icing: Beat softened vegan butter and softened vegan cream cheese. Mix in the molasses and vanilla extract. Add the icing sugar, ground ginger and ground cinnamon. Mix to combine. Spread the icing all over the warm rolls. Enjoy!