Preheat oven to 350 degrees. Combine almond flour, coconut oil, honey, and egg white in a mixing bowl. Mix well, then press mixture in to a 9 x 9 baking dish that has been greased with a little coconut oil.
Bake the crust for 10-15 minutes, or until lightly golden brown. When finished baking, cool slightly, then transfer to refrigerator for 20 minutes to cool completely.
While crust is baking, make the filling. Combine the cream cheese or Neufchatel cheese with the Greek yogurt, honey, and vanilla extract in a mixing bowl, and beat with a hand mixer until well combined.
To prepare the tart: Spread filling over the crust, top with orange slices, and drizzle honey on top. Cut in to 12 squares. Best served chilled.