Spray a 9x5" loaf pan with cooking spray. Cut a long piece of parchment paper and place it across the bottom and up the ends of the pan with 1-2 inches hanging over the edge. (You will use the ends to lift the bread out of the pan.)

Preheat your oven to 350°.

For the crumb topping, combine the sugars, flour, spices, and melted butter. Mix until crumbly. If it doesn't form crumbs, chill it while you make the batter.

Whisk together the flour, baking powder, cinnamon, pumpkin pie spice, and salt in a small bowl.

In a large bowl, whisk together the oil, sugars, eggs, pumpkin purée, and vanilla. Stir in the dry ingredients just until there are no streaks of flour.

Spread the batter into the prepared bread pan. Sprinkle the streusel over the top of the loaf.

Bake at 350° for about 65 minutes, or until a toothpick inserted in the middle comes out clean or with moist crumbs.

Let the loaf cool in the pan for about 10 minutes, then use the parchment paper to remove it from the pan.

Transfer to a wire rack to cool completely before slicing.