Preheat a non-stick electric griddle to 375 degrees Fahrenheit.
In a large mixing bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, ginger, nutmeg, and cloves. Create a well in the center of the mixture and set it aside.
In a medium mixing bowl, whisk together the pumpkin puree, buttermilk, brown sugar, melted butter, eggs, and vanilla extract until well combined.
Pour the pumpkin mixture into the well in the dry mixture and whisk the two together just until combined. Allow the batter to rest for 3 minutes.
Butter the griddle, then pour about 1/3 cup of batter at a time onto the griddle. Slightly spread the pancakes outward with the bottom of the measuring cup.
Cook the pancakes until they are golden brown on the bottom, then flip them and cook the opposite side until it's also golden.
Repeat the process until all of the batter has been used.
Serve the pancakes warm with butter and maple syrup.