Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners.
In a large bowl, whisk together the gluten-free flour blend, baking powder, baking soda, salt, cinnamon, nutmeg, and cloves.
In another bowl, mix the pumpkin puree, brown sugar, granulated sugar, vegetable oil, eggs, and vanilla extract until smooth.
Gradually add the wet ingredients to the dry ingredients, mixing until just combined.
Divide the batter evenly among the muffin cups.
For the streusel topping, combine the gluten-free flour blend, brown sugar, granulated sugar, cold butter, and cinnamon in a bowl. Use a fork or pastry cutter to mix until the mixture resembles coarse crumbs.
Sprinkle the streusel topping evenly over the muffin batter.
Bake for 20-25 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
Let the muffins cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.