Meanwhile, in a large bowl beat together Greek yogurt, cream cheese, ricotta cheese, and pumpkin puree with a hand mixer.
Add eggs, collagen powder, and vanilla and beat until well-combined.
Add spices, brown sugar, and maple syrup and mix until thick and creamy.
Pour pumpkin mixture over crust and bake in a 350 degree F oven for 20-25 minutes until batter is just set (center should be a little bit wiggly).
Let cool for 1 hour and refrigerate for at least 3 hours before serving.