Preheat your oven to 350°F (175°C).
Grease a 9x5-inch loaf pan with butter or line it with parchment paper.
In a large mixing bowl, combine melted butter, pumpkin puree, Greek yogurt, eggs, light brown sugar, maple syrup, and vanilla extract. Whisk until smooth.
In another bowl, whisk together all-purpose flour, baking soda, baking powder, salt, cinnamon, cardamom, ginger, allspice, and cloves.
Gradually add the dry mixture to the wet ingredients while gently folding. Do not overmix.
Pour the batter into the prepared loaf pan and spread evenly.
Bake for about 45 minutes or until a toothpick inserted into the center comes out clean.