Slice the butter and put in a bowl. Add the brown and white sugar, and mix until you get a smooth, creamy mix.

Sift the flour into another bowl. Add the baking powder, nutmeg and salt and mix. Drop in the walnuts and raisins.

Mix together the egg and milk.

Add the egg mix into the butter mix, a little every time.

Carefully add the flour into the butter mix.

Squash the bananas. Add the vanila and mix.

Mix the bananas into the cake dough.

Put the dough into a rectangle cake form.

Bake the cake at 180° for an hour. To know the cake is ready, carefully put a fork inside it. If the fork gets out without any leftovers, the cake is ready.