Begin by gathering all necessary ingredients to ensure a smooth cooking process.

In a large mixing bowl, combine the milk, pumpkin puree, egg, vegetable oil, and vinegar, stirring until the mixture is well blended.

In a separate bowl, whisk together the all-purpose flour, brown sugar, baking powder, baking soda, ground allspice, ground cinnamon, ground ginger, and salt. Gradually add this dry mixture to the pumpkin mixture, whisking just until combined; take care not to overmix.

Prepare a griddle or frying pan by spraying it with cooking spray and heating it over medium-high heat.

For each pancake, pour 3 to 4 tablespoons of batter onto the hot surface and gently flatten it using a spoon.

Cook until small bubbles form on the surface, approximately 2 minutes.

Flip the pancakes and continue cooking until they achieve a golden brown color, which should take about 2 additional minutes. Repeat this process with the remaining batter.

Serve the pancakes warm and enjoy!