In a medium bowl, whisk together buttermilk, pumpkin butter, egg, oil and vanilla.
In a large bowl, combine both flours, brown sugar, milk powder, baking powder, baking soda and salt.
Stir dry ingredients into the pumpkin mixture until just combined.
Heat a lightly oiled or buttered griddle or nonstick frying pan over medium high heat.
Pour or ladle the batter onto the griddle, using approximately ⅓ cup for each pancake.
Cook until surface of pancakes have some bubbles and edges appear dry, about 1 to 2 minutes.
Using a thin spatula, flip each pancake and cook until browned on the underside, about 2 minutes more. Transfer cooked pancakes to a baking sheet and keep warm in oven.
Repeat with remaining batter adjusting heat as needed.