Preheat the oven to 180°C fan / 200°C conventional. Line a small loaf tin, approximately 16cm long, with baking parchment.
Add the pumpkin purée, egg, maple syrup, coconut sugar, apple sauce and vanilla extract to a large mixing bowl. Whisk until smooth and well combined.
Add the gluten-free flour, baking powder, bicarbonate of soda, salt, cinnamon, ginger, nutmeg and cloves.
Gently stir until everything is just combined. Avoid overmixing the batter.
Pour the mixture into the prepared loaf tin and smooth the top.
In a small bowl, combine the coconut sugar and cinnamon for the topping. Sprinkle evenly over the batter.
Gently swirl a little of the cinnamon sugar into the surface of the batter with the tip of a knife, leaving plenty of the mixture on top.
Bake for 30-40 minutes, checking the loaf after 30-35 minutes. Insert a skewer into the centre - if it comes out with wet batter attached, continue baking and check again after a few minutes. The loaf is ready when the skewer comes out without wet batter, although a few moist crumbs are fine.
If the top begins to brown too much before the centre is cooked, loosely cover it with foil for the remainder of the baking time.
Leave the loaf to cool in the tin for around 10-15 minutes before carefully lifting it out and transferring it to a cooling rack.
Allow it to cool before slicing. It's particularly lovely served slightly warm.