Preheat oven to 180°C (350°F) and grease a baking dish or line it with parchment paper.
Mix wet ingredients – In a bowl, combine mashed bananas, eggs, milk, and vanillin. Stir until well mixed.
Add dry ingredients – Mix in the oatmeal, baking powder, cranberries, dried apricots, and almond flakes. Stir until combined.
Transfer to a baking dish – Pour the mixture into the prepared dish, spreading it evenly.
Bake for 25–30 minutes – Check with a toothpick; if it comes out clean, the cake is ready.
Cool and serve – Let the cake cool slightly before slicing. Enjoy it warm or chilled!