Fast cheesecake ~ creamy and delicious ♥ P&S Backparadies

For the dough:
80g soft butter
1 egg
80g sugar
200g flour
1 teaspoon Baking powder
For the filling:
500g quark
600g cream cheese
4 eggs
200g sugar
2 good tablespoons of cornstarch
1 tbsp lemon juice
120g melted butter
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