Preheat the oven to 175 degrees Celsius.
Line one 20 cm spring form or two smaller 12 cm spring forms (I used two small).
Whisk eggs together with sweetener until fluffy.
Add the apple sauce, yogurt and vanilla extract and whisk again until incorporated.
Combine oat flour, almond flour, baking soda and baking powder in a separate bowl.
Add the dry ingredients to the wet and stir to combine, until you have a smooth batter.
In a separate bowl add ricotta, egg, sweetener and lemon juice and whisk until a little fluffy and fully combined.
Pour the batter into the big spring form or divide between the two smaller forms.
Add the ricotta layer on top.
Top with raspberry and slivered almonds and bake in the oven for 23-27 minutes.
Take out and let it cool completely.