Pre-heat oven to 400 degrees.
Mix all crust ingredients together to form dough. Refrigerate for 15-20 minutes.
In a small bowl, whisk together vanilla protein, almond milk and 1 packet Truvia until smooth. Set aside.
Place dough on a piece of parchment paper and flatten. Place a second piece of parchment paper on top and roll until it forms a thin crust (about 1/4"). Carefully remove top layer of parchment paper and push edges of dough inward to form a raised crust at the edge. Spray with coconut oil and bake on top of a pizza pan for 10-12 minutes.
While the crust is cooling, add apple slices, maple syrup and cinnamon to a medium saucepan. Bring to a boil over medium heat, then reduce to low and simmer for 5-7 minutes or until tender. Carefully mix in 1 tsp coconut flour.
Allow apple mixture to cool slightly, then drizzle protein icing over top of apple mixture.