Preheat the oven to 180℃/160℃ fan/350℉/gas mark 4. Line two baking sheets with baking paper.
Whisk together the treacle/molasses and the melted butter in a large bowl then whisk in the brown sugar, fresh ginger, vanilla extract and water.
50 g (2 ½ Tablespoons) black treacle or molasses, 60 g (¼ cup) vegan block butter, 200 g (1 cup) dark brown soft sugar, 1 Tablespoon finely grated fresh ginger, 1 Tablespoon vanilla extract, 120 g (½ cup) water
Whisk in the ground ginger, cinnamon, nutmeg, allspice, salt, baking powder and bicarbonate of soda.
3 teaspoons ground ginger, 2 teaspoons ground cinnamon, ½ teaspoon ground nutmeg, ½ teaspoon ground allspice, ½ teaspoon salt, 2 teaspoons baking powder, ½ teaspoon bicarbonate of soda (baking soda)
Add the flour and stir with a spatula until it is fully combined. The dough should be soft and a bit sticky. Cover the bowl and refrigerate for 15 minutes for it to firm up a bit.
500 g (4 cups) plain (all-purpose) flour
Knead the dough on a lightly floured surface until it forms a smooth ball.
Roll the dough out on a lightly floured suface to about 1 cm thick. Use a floured 9 cm round cutter to cut out as many rounds as possible. Place them spaced apart on the baking sheets.
Knead together the dough scraps and re-roll the dough to cut out more rounds.
Bake the bulla cakes for 15 minutes until a skewer inserted into the centre comes out clean.
Transfer the bulla to a wire cooling rack and brush with the melted butter then allow to cool before serving.
30 g (2 Tablespoons) vegan butter