Step 1

Preheat oven to 350°F. Lightly coat a standard 12-cup muffin tin with nonstick spray or line with paper liners.

Step 2

Whisk flour, baking powder, cinnamon, ginger, salt, and nutmeg in a medium bowl.

Step 3

Whisk brown sugar, pumpkin, granulated sugar, vegetable oil, and eggs in a separate medium bowl, and beat vigorously until smooth and combined. Add flour mixture and mix until evenly incorporated.

Step 4

Divide batter evenly among muffin cups. Sprinkle evenly with granulated sugar and bake until a toothpick inserted in the center comes out clean, 22 to 25 minutes. Serve warm or room temperature.