Preheat your oven to 375°F (190°C) and line a muffin tin with paper liners.
In a large bowl, whisk together the flour, granulated sugar, brown sugar, baking soda, salt, cinnamon, nutmeg, cloves, and ginger.
In another bowl, mix the pumpkin puree, vegetable oil, orange juice, and flax eggs until well combined.
Pour the wet ingredients into the dry ingredients and stir until just combined.
Divide the batter evenly among the muffin cups.
Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
Let the muffins cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.