Whip margarine and sugar. Mix flour and baking powder and then add all ingredients together. Whisk lightly but don't knead. Take a baking tin (diameter around 25-30 cm) and pat the most of your dough as a flat "rug" in it. Form sides slightly higher than the rest of the rug so your filling won't drain out of that base when you finally add it. Pour filling onto the base, sprinkle the rest of dough on it and throw into an oven. Bake in 200C 25-30 minutes.
If you want really thin base in your pie, you can also use a baking sheet like I did in the picture.
Recipe 2: Cake of the broken hearts (quark cake):
Suffering from a broken heart? Not anymore, I'm sure this sweet cake will speed up your healing a lot.