In a small bowl, combine the almond milk and apple cider vinegar. Set aside for a few minutes.
All the all-purpose flour, protein powder, baking soda, sugar and salt to a medium bowl. Whisk together and pour in the almond milk/apple cider vinegar mixture. Stir until combined.
Scoop mixture into greased waffle iron and cook until slightly browned. Top with fresh berries and melted peanut butter.