Heat the water in a microwave-safe bowl in a microwave or in a small saucepan over the stove until it’s lukewarm but not yet hot (110 to 115°F [43 to 46°C]). Stir in the sugar and yeast. Let the mixture stand for 5 minutes until the yeast foams.
In a large bowl, whisk together the flour and salt. Pour in the melted vegan butter and the yeast mixture and mix with a wooden spoon until a shaggy dough forms. Turn out the dough onto a clean work surface and knead for 5 to 6 minutes, or until soft and springy. If the dough feels too dry, wet your hands with a little warm water and continue kneading. If it’s sticking to your fingers, add a dusting of flour, but err on the side of a stickier dough.
Place the dough in a well-oiled bowl and turn the dough over a couple of times so it’s coated with oil. Cover the bowl with a clean, damp towel and place in a warm spot to rise for 1½ hours, or until the dough has doubled in size (see Tip).
While the dough rises, make the filling: In a small bowl, use a spatula to mix the vegan butter, brown sugar, cinnamon, cardamom, ginger and allspice into a spreadable paste.
Grease a 9 x 13–inch (23 x 33–cm) baking dish with vegan butter and line with parchment paper, leaving a slight overhang for easy removal.
Once the dough has risen, roll it into a 12 x 18–inch (30 x 45–cm) rectangle. Spread the filling mixture over the surface and, starting from the wider end of the rectangle, roll the dough into a tight log. Use a sharp knife or a clean length of dental floss to cut the log into nine equal-sized pieces.
In the prepared baking dish, arrange the rolls,cut side down, in a single layer. They will rise quite a bit, so each roll should just barely be touching the others. Cover the dish with plastic wrap and place in a warm spot to rise for another 45 minutes.
When ready to bake, preheat the oven to 350°F (180°C). Uncover the cinnamon rolls and bake for 30 to 35 minutes, or until the tops are lightly golden brown. Be careful not to overbake, these taste best when they’re still a little gooey.
While the cinnamon rolls bake, make the glaze:In a small bowl, whisk together the powdered sugar, maple syrup, vanilla and 1 tablespoon(15 ml) of nondairy milk. If the glaze seems too thick, add another splash of milk until it’s smooth and pourable.
Remove the cinnamon rolls from the oven and allow to cool for 5 to 10 minutes before pouring the glaze on top. Serve warm.