Start by preheating your oven to 350°F (175°C). Line a 9×5 loaf pan with parchment paper so the bread can be easily removed later. Lightly grease the paper if needed to prevent sticking.
In a large bowl, whisk together the melted butter, pumpkin puree, Greek yogurt, eggs, brown sugar, maple syrup, and vanilla extract. Keep mixing until the mixture becomes smooth and creamy with an even orange color.
In another bowl, combine flour, baking soda, baking powder, salt, cinnamon, cardamom, ginger, allspice, and cloves. This mixture creates the signature chai spice flavor that makes the bread so aromatic.
Gradually add the dry ingredients to the wet mixture. Gently fold everything together until just combined. Avoid overmixing because it can make the bread dense instead of soft.
Pour the batter into the prepared loaf pan. Use a spatula to smooth the top so the bread bakes evenly. This step also helps give the loaf a neat shape.
Place the pan in the oven and bake for about 45–50 minutes. The bread is ready when a toothpick inserted into the center comes out clean or with only a few crumbs.
Allow the bread to cool completely on a wire rack before glazing. Mix powdered sugar, maple syrup, and milk until smooth, then drizzle generously over the loaf. Let the glaze set for about 10 minutes before slicing.