In a bowl, whisk the eggs and sugar.
Add the yogurt and oil, then mix well.
Add the almond flour, flour, and baking powder, then mix until smooth.
Pour the batter into a cake pan and add the blueberries on top.
Prepare the crumble by mixing the flour, cold butter, and sugar until crumbly.
Sprinkle the crumble over the cake.
Bake at 180°C (350°F) for about 35–40 minutes.
