Easy and Simple with Simple Ingredients Sour Cream Cake

Super delicious and easy cake! When you have a lot of sour cream and you don't know what to do with it, make this yummy cake)
Ingredients:
Dough:
2 egg yolks
7TBsp (80g) soft butter
1/3 cup (70g) sugar
1 1/3 cup (200g) flour
1tsp baking powder
Filling:
2 egg whites
1/3 cup (80g) sugar
1 2/3 cup (400g) sour cream
3TBsp flour
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