In a large bowl, whisk together the buttermilk, pumpkin, eggs, butter and vanilla until very well-combined.
In a separate medium bowl, whisk together the flour, sugar, baking powder, cinnamon baking soda, nutmeg, salt, ginger and allspice.
Add the dry ingredients to the wet ingredients and mix until just combined and no dry streaks remain. Don't over mix or the waffles may cook up tough instead of soft and fluffy.
Heat a waffle maker to medium. Scoop batter into hot waffle maker and cook until golden.
Serve with butter, maple syrup, buttermilk syrup (recipe below), nutella, or whatever your heart desires.
Notes
Buttermilk:I prefer using store bought buttermilk in this recipe, but you can sub in homemade buttermilk (milk + squeeze of lemon juice or whisk together 1/2 milk + 1/2 sour cream). Regular milk can be subbed for the buttermilk, but the waffles may not be quite as fluffy and tender. Buttermilk syrup:click here for the recipe for homemade buttermilk caramel syrup (crazy delicious with these waffles).