Preheat oven to 375°F. Line 12 muffin cups with paper liners. Set aside.
In a large bowl, whisk together the granulated sugar, brown sugar, oil, and eggs. Add the pumpkin and vanilla extract; whisk to combine. Sprinkle baking soda, baking powder, and salt over top. Whisk until well blended.
¾ cup granulated sugar, ½ cup packed light brown sugar, ½ cup vegetable oil, 2 large eggs, 1 15 oz. can pure pumpkin puree (not pumpkin pie filling), 1 teaspoon vanilla extract, 1 teaspoon baking soda, ½ teaspoon baking powder, ¾ teaspoon salt
Stir in the flour, cinnamon, ginger, nutmeg, cloves, and allspice; be careful not to over-mix.
2 cups all-purpose flour, sifted, 1 ¼ teaspoons ground cinnamon, ½ teaspoon ground ginger, ½ teaspoon ground nutmeg, ½ teaspoon ground cloves, ¼ teaspoon ground allspice
Divide the batter evenly among the prepared muffin cups. Each cup will be really full, which yields those tall muffin tops.
Sprinkle about 1 teaspoon of coarse sugar on top of each muffin. It seems like a lot of sugar for each muffin, but this is what gives them those bakery-style sugar-crusted tops!
Coarse sugar, for topping
Bake the muffins for 20-25 minutes, or until a toothpick inserted in a muffin comes out clean.
Transfer to wire racks to cool.