Any of the vanilla types can be used in cake batter recipes, but if you are looking for a stand-out vanilla flavor, beans or paste are your best bet. Extract, on the other hand, is best used in ...
Put the butter, sugar, eggs, vanilla or almond extract, almonds, flour and baking powder in a food mixer or food processor. Beat until smooth and thick. Spoon the cake batter into the prepared tin.
Then whisk in the vanilla extract. Sift the flour and salt into a large bowl, then fold it gently into the butter and egg mixture. Divide the cake batter into two equal portions (about 350g each).