Heat up your waffle maker
In a mixing bowl, add in the flour, cornstarch, baking powder, salt, brown sugar, cinnamon, nutmeg, ginger and clove. Stir to combine.
Separate the egg yolks and whites.
Beat the egg whites on high until stiff peaks form. Set aside.
Add the buttermilk, egg yolks, melted butter, vanilla bean paste and pumpkin into the dry ingredients. Mix with the hand mixer until incorporated.
Fold in the stiff egg whites. The mixture will be slighly lumpy.
Scoop about 3/4 to 1 cup of the batter into the waffle maker. I quickly spread my batter to the edges of the waffle maker before shutting it.
Let the waffles cook until done. Mine took about 5 minutes to crisp up.
I layed my waffles out on a piece of wax paper and did not stack them. This was so they didn't get super soft.
Let the waffles cool completely before stacking them and adding the maple buttercream.