Preheat the oven to 175 degrees Celsius / 350 Fahrenheit top and bottom heat.
Mix all the ingredients for the crumble into a crumbly mixture and place in the freezer while you make the rest of the cake.
Place the pumpkin puree, sugars and oil in a bowl. Mix by hand or with a stand mixer. Add the eggs, vanilla and milk one at a time, continuing to mix.
Finally, add the rest of the dry ingredients little by little until you have a nice batter.
Pour the mixture into a greased loaf pan. Take the crumbs out of the freezer and spread them on top.
Put the pumpkin bread in the oven, lower the temperature to 160 degrees Celsius / 320 Fahrenheit and bake for 1 hour. Allow to cool completely before slicing, enjoy!