Ingredients
Equipment
Method
Prep oven and pan
- Preheat the oven to 350F and grease a 9x5 loaf pan.
Make and chill streusel
- Cut cold butter into flour, brown sugar, and cinnamon until crumbly, then refrigerate.
Mix dry ingredients
- Whisk all-purpose flour, baking soda, pumpkin pie spice, cinnamon, and salt until evenly combined.
Mix wet ingredients
- Whisk pumpkin puree, granulated sugar, packed brown sugar, vegetable oil, eggs, vanilla extract, and sour cream until smooth.
Combine batter
- Fold the dry mixture into the wet mixture until just combined, then fold in 1 cup semi-sweet chocolate chips.
Assemble loaf with topping
- Pour batter into the loaf pan and scatter the remaining semi-sweet chocolate chips over the top.
Add streusel and bake
- Generously cover the top with the chilled streusel topping.
Bake and finish
- Bake for 60 to 65 minutes until a toothpick comes out clean, and tent with foil after 35 minutes if browning too fast.
Notes
For the best crumb, refrigerate the streusel while you mix the batter so it stays chunky and bakes up with crisp caramelized edges. Store tightly covered at room temperature for up to 2 days or refrigerated for up to 5 days; freeze slices wrapped well for up to 2 months. For a lighter option, use low-fat sour cream (keep the same amount) for a slightly less rich texture while retaining moisture.
