To make the dough, combine the flour, yeast, salt, pumpkin spice, pumpkin puree, maple syrup, oil and water in the bowl of a stand mixer fitted with a dough hook.
600 g (5 cups) white bread flour, 10 g (3 teaspoons) instant/fast action yeast, 10 g (1 ¾ teaspoons) salt, 3 teaspoons pumpkin spice, 270 g (1 cup + 2 Tablespoons) pumpkin puree, 80 g (¼ cup) maple syrup, 73 g (⅓ cup) olive oil, 120 g (½ cup) water
Knead on medium speed for about 10 minutes until smooth and stretchy, it may not reach a windowpane stage due to the pumpkin. The dough should be soft and very sticky but not wet. Alternatively you can knead the dough by hand on an un-floured surface. Use a bench scraper to unstick the dough from the surface as needed.
Use oiled hands to shape the dough into a ball, place it in an oiled bowl, cover and set aside to rise until doubled in size, about 2 hours.
Punch down the risen dough, give it a brief knead to knock out any air then divide it in half. Shape each half into a neat ball by pulling the sides into the centre and pinching them together. Flip the dough seam side down, cup it with your hands on either side and roll it until it is smooth; you are trying to create surface tension but don't go so far that the surface tears.
Cut 8 long pieces of string, about 43 cm/17 in long. Lay two of them in a cross shape on the work surface, then lay another two across the first two, to create 8 spokes radiating from a centre point.
Place one of the shaped balls of dough seam side up on top of the middle of the string. Bring the opposite ends of each piece of string up and over the loaf and tie them together on top of the dough. The string should sit loosely on the surface of the dough, not cut into it. Trim the long ends close to the knot.
Repeat with the other ball of dough, flip them over and place well spaced apart on a lined baking sheet. Loosely cover with oiled clingfilm and set aside to rise until puffy, about 45 minutes. The dough should have started to bulge out between the pieces of string and if you press it gently with a fingertip it should spring back slowly most of the way but leave a small indentation. If it springs back quickly and fills in all the way then they need a little bit longer.
While the dough is rising preheat the oven to 200℃/180℃ fan/400℉/gas mark 6. To make the glaze stir together the milk, maple syrup and oil in a small bowl.
1 Tablespoon non-dairy milk, 1 Tablespoon maple syrup, 1 teaspoon olive oil
Once the dough has risen, use a lame or sharp knife to score each of the dough sections. You can cut a single slash up the middle of the section, or make smaller, angled cuts. You can also make snips with a pair of kitchen scissors.
Gently brush the dough with the glaze (or dust with flour instead) then bake for 30-35 minutes until the loaves are deep brown and the temperature in the centre registers 90°C/194°F on a probe thermometer or they sound hollow when tapped on the base.
Allow to cool for 10 minutes then snip the strings and pull them out of the grooves. Brush the loaves with melted vegan butter or maple syrup if you like. Use a pair of scissors to cut a small X in the centre of the loaves and push a pecan nut half into the hole to make the stems, add a bay leaf as well if you like.
1 pecan nut, , 2 small bay leaves
Allow the loaves to cool completely on a wire cooling rack before serving.