Put cream cheese and yogurt in a bowl, and mix until smooth.
Add erythritol and mix evenly.
Add eggs one at a time and mix well.
Add oat flour to complete the batter.
Pour the batter into a mold and smooth the surface.
Bake in a preheated oven at 180°C for 30 minutes.
Let it cool completely, then refrigerate for at least 2 hours.