Preheat your waffle iron.Mix the dry ingredients in a large bowl (oat flour, flax, whey protein, pumpkin pie spice, baking powder).Add in the wet ingredients (vanilla, milk, pumpkin, eggs).Mix until blended together. Allow the batter to sit for 5 minutes to thicken up a bit.Spray your waffle iron with cooking spray. Add approx 3 Tbsp of the waffle mixture to each waffle slot.Cook for about 5-6 minutes, they will start to darken and become crispy on the outside when done.For the cream cheese syrup, whisk all the syrup ingredients together, adding enough milk so its a consistency you want.Serve waffles with cream cheese syrup if desired.