Brown the Butter
Melt butter over medium heat, stirring constantly, until golden and nutty (5–7 minutes). Remove from heat and let cool slightly.
Mix Wet Ingredients
In a large bowl, whisk pumpkin purée, brown sugar, Greek yogurt, oil, eggs, vanilla, and cooled brown butter until smooth.
Combine Dry Ingredients
In another bowl, whisk flour, baking soda, baking powder, salt, cinnamon, nutmeg, ginger, and cloves.
Mix Batter
Add dry ingredients to wet ingredients and gently mix until just combined. Fold in chocolate chips.
Bake
Pour batter into a greased 9×5-inch loaf pan. Bake at 350°F (175°C) for 55–65 minutes, until a toothpick comes out with moist crumbs.
Cool & Serve
Let cool before slicing. Serve warm or at room temperature.