Preheat oven to 200°C. Beat eggs, sugar and vanilla together.
Sift the flour, salt and baking powder together.
Add to egg mixture.
Heat butter and milk in a heavy-based saucepan until butter melts.
Add to flour mixture and mix well.
Divide batter between 2 greased 20 cm cake tins.
Bake for 20 minutes or until cake springs back when lightly pressed.
Allow cake to cool in tins before turning out on a wire rack.
Decorate with icing of choice.