Add the flour, baking powder, and a pinch of salt to the bowl. Mix until just combined.
Incorporate oil and vanilla:
Add the vegetable oil and vanilla extract to the batter. Mix until smooth and well combined.
Add the fruit:
Gently fold in the berries or chopped fruit of your choice. If using frozen berries, no need to thaw them; just fold them in gently.
Pour the batter:
Pour the batter into the prepared cake pan and spread it evenly.
Bake:
Bake in the preheated oven for about 35-40 minutes, or until a toothpick inserted into the center comes out clean. If the top of the cake browns too quickly, cover it with aluminum foil halfway through baking.
Cool:
Allow the cake to cool in the pan for about 10 minutes, then transfer it to a wire rack to cool completely.
Serve:
Serve the cake warm or at room temperature. It’s perfect on its own or with a dollop of yogurt or a drizzle of honey.
Enjoy this delightful and easy-to-make breakfast cake with your morning coffee or tea!