INGREDIENTS
1/2 tsp
Lemon, zest
10
Prune" plums, purple
2
Eggs, large
1 1/8 cups
All-purpose flour
1/2 tsp
Baking powder
1
Confectioners' sugar
1 3/4 cups
Granulated sugar
1/4 tsp
Kosher salt
1/2 tsp
Vanilla extract, pure
6 tbsp
Butter, unsalted
1/3 cup
Sour cream