Preheat oven to 350°F. In a large bowl combine flour, baking soda, baking powder, salt and pumpkin pie spice.
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In a medium bowl combine pumpkin puree, light brown sugar, granulated sugar, oil and milk.
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Add the wet ingredients to the dry ingredients and mix just until combined. Make sure not to over mix. The batter will be thick that is ok!
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Pour batter into the prepared pan and sprinkle with streusel topping. Bake for 30-35 minutes or until a toothpick inserted comes out mostly clean with a few crumbs on it.
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