Preheat the oven to 180g and prepare you tin with margarine and dust it with flour, keep it aside

Mix your margarine and sugar for about 10min the color will have started changing.

Add vanilla flavor and eggs continue to mix

Add flour and baking powder, the should be sieved before adding

When the mixture is well mixed transfer to the baking tin. Cook for 1hour but depending on different oven you can check after 45min with a toothpick if it comes out dry it's ready.