Blend the cottage cheese, eggs, milk, and vanilla extract until smooth.
Whisk the oat flour, protein powder, baking powder, cinnamon, and salt in a large bowl.
Stir the blended cottage cheese mixture into the dry ingredients, then fold in the crushed cinnamon cereal. Rest the batter for 5 minutes.
Heat a lightly buttered nonstick skillet over medium-low heat. Cook the pancakes in small portions until the tops look bubbly and the edges are set.
Flip the pancakes and cook for another 1 to 2 minutes. Repeat with the remaining batter.
Whisk the Greek yogurt, maple syrup, milk, and cinnamon until smooth.
Drizzle the cinnamon glaze over the stack and scatter the extra crushed cereal over the top for crunch.