Mix the Krusteaz mix, water, pumpkin pie spice, pumpkin, brown sugar, and vanilla extract together in a mixing bowl until well incorporated. Do not overmix as this could cause the pancakes to turn out tough/rubbery.
1 cup Krusteaz buttermilk pancake mix, ⅔ cup cold water, 1 tsp pumpkin pie spice, ¼ cup pure pumpkin, 1 tbsp light brown sugar, 1 tsp vanilla extract