====== Oma's Apple Cake ======

  * 125g unsalted butter
  * 125g self-raising flour
  * 125g caster sugar
  * 3 eggs
  * grated zest of one lemon
  * 2 tsp baking powder
  * 2 tbsp milk

Mix together ingredients, pour in baking form, gently press quartered, peeled apples into the top. Bake at 160 degrees for 35 - 40 minutes.