cake that I can eat after dinner

2 cups (about 500 g) Greek yogurt
3 medium eggs
½ cup (about 60 g) cornstarch
Sweetener (erythritol, honey or other, in varying amounts)
3 drops natural vanilla extract
Preparation
: Mix all liquid ingredients in a large bowl: Greek yogurt, eggs, sweetener and vanilla. Whisk by hand or with an electric mixer until smooth.
Add the sifted cornstarch and mix gently to avoid lumps.
Line a 18-20 cm baking tin with lightly greased or damp baking paper to ensure the batter sticks well.
Pour the batter into the tin and smooth the surface with a spatula.