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Grandma's German Plum Cake

springform pan with Grandma's German Plum Cake with streusel topping

German plum cake, aka Pflaumen-Streuselkuchen! So thankful to my niece, Melissa Fulson, for finding this long-lost family favorite from her Grandma (my hubby's Mutti)! Now that I've posted it, it'll be part of my traditional German baking as well :-) Melissa added that this is definitely not a quick recipe. But, it is definitely delicious! 

I remember having it at my mutti-in-law's out in their lovely backyard. She was such a great cook and loved baking. This plum cake was served with a dollop of whipped cream on the side ... and no leftovers!

Grandma's German Plum Cake



  • ¾ cup sugar
  • 3 Tbsp cornstarch
  • 3 cups sliced plums
  • lemon juice (if needed)
  • butter (if needed)


  • 1 Tbsp vinegar
  • ¾ cup milk
  • 1 egg
  • 2¼ cups all-purpose flour
  • ¾ cup sugar
  • ¾ cup butter, cold
  • ½ tsp baking powder
  • ½ tsp baking soda
  • ½ cup finely chopped walnuts



  • Stir together sugar and cornstarch.
  • Add to a saucepan with sliced plums.
  • Stir over medium heat until fruit thickens.
  • Add a couple of tablespoons lemon juice if too sweet. 
  • Add some butter if too sticky.
  • Set aside to cool.


  • Preheat oven to 350° F. Butter a 9-inch springform pan.
  • Stir together vinegar and milk
  • Set aside for 5 minutes. Then add egg and beat together
  • In another bowl combine flour and sugar. Cut in butter until crumbly.
  • Remove ½ cup and reserve for the streusel topping.
  • To the remainder add baking powder, baking soda, and walnuts.
  • Add milk mixture to dry ingredients, stirring just until moistened.
  • Spread ⅔ of batter over the bottom and part way up the sides of the pan.
  • Spread the fruit filling over the batter.
  • Spread the remaining batter over the fruit in small spoonfuls, using two forks to spread over the filling as well as you can.
  • Sprinkle with the reserved streusel topping.
  • Bake for about 50 minutes or until nicely browned.

You can serve this plum cake either warm or cold. Ice cream or whipped cream on the side? WUNDERBAR!

Now, you may ask, why is the filling so red? Well, that depends on the type of plum you use. Keeping the skins on while cooking the filling increases the color. (If you prefer, you can peel the plums.)

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Grandma's Plum Streuselkuchen is a delicious journey down memory lane

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