Start by preheating your oven and greasing your loaf pan. In a large bowl, mix pumpkin puree, sugar, oil, eggs, and vanilla until smooth. In another bowl, combine all dry ingredients, then slowly add them to the wet mixture.
Mix gently until just combined, avoiding overmixing to keep the bread soft. Fold in the chocolate chips evenly throughout the batter.
In a small bowl, combine flour, brown sugar, and cinnamon. Add cold butter cubes and use your fingers or a fork to mix until crumbly. The texture should resemble coarse crumbs.
This topping adds a sweet, crunchy layer that contrasts beautifully with the soft bread.
Pour the batter into the prepared loaf pan and spread it evenly. Sprinkle the streusel mixture generously over the top, covering the surface.
Gently press the topping slightly so it sticks during baking but still remains crumbly.
Place the loaf in the preheated oven and bake for 50–60 minutes. Check doneness by inserting a toothpick into the center; it should come out clean or with a few moist crumbs.
If the top browns too quickly, loosely cover with foil during the last 10 minutes.
Remove the bread from the oven and let it cool in the pan for about 10 minutes. Then transfer it to a cooling rack to cool completely.
Slice once cooled to get clean cuts and enjoy every moist, flavorful bite.