Preheat the oven to 400 degrees F. Grease a quarter sheet pan well and line with parchment paper. Make the cinnamon sugar by mixing 2 tablespoon sugar with ½ teaspoon cinnamon and set aside.
In a large bowl, whisk together 2 cup protein pancake mix, 1 tsp baking powder, ½ tsp cinnamon, and ¼ tsp salt.
In a blender, blend 4 eggs, 1 cup whole milk cottage cheese, ⅓ cup milk, 1 tbsp olive oil, 1 tbsp pure maple syrup, and 1 tsp vanilla extract until completely smooth. The mixture will be thick, so stop and scrape down the sides as needed. Pour into the dry ingredients and fold until just combined. Some lumps are fine, do not overmix.
Spread the batter evenly into the prepared pan and sprinkle with 2 tbsp cinnamon sugar. Let it rest for 5 minutes so the baking powder activates.
Bake for 15-20 minutes, until the center springs back and a toothpick comes out with a few moist crumbs. Pull it while the top is pale golden, not brown, so it stays soft. Cool in the pan for 5 minutes.
In another bowl, mix the ½ cup whipped cream cheese, 1 cup plain non-fat Greek yogurt, ½ tsp cinnamon, 1 tsp vanilla extract, and 2 tbsp pure maple syrup into a frosting. Add 2-3 tbsp milk a tablespoon at a time until it spreads or drizzles the way you like. See ingredient list for notes on using a block of cream cheese.
Slice the pancake into 6 even slices and serve with about ¼ cup of frosting each. Top with more maple syrup as desired.