Preheat the oven to 350°F and line a baking sheet with parchment paper.
Blend the cottage cheese, egg, maple syrup, melted butter, and vanilla extract until smooth.
Whisk the vanilla protein powder, oat flour, all-purpose flour, baking powder, cinnamon, and salt in a large bowl.
Stir the cottage cheese mixture into the dry ingredients until just combined.
Fold in the chopped pecans, then chill the dough for 25 minutes.
Scoop 12 portions onto the baking sheet and flatten each one slightly.
Bake for 12 to 14 minutes, until the edges are golden. Let the cookies cool on the baking sheet for 10 minutes to finish setting.