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–+ servings

sugarsalted.com

Easy plum streusel coffee cake

Perfect late summer dessert that is easy to whip up! Made with purple Italian plums and a cookie-like streusel.
Prep 20 minutes
Cook 50 minutes
Total Time 1 hour 10 minutes
Servings 8

Ingredients 
US | M

Cinnamon streusel
  • 1 cup all-purpose flour
  • 1/2 cup, packed light brown sugar or light muscovado
  • 1 teaspoon ground cinnamon
  • 6 tablespoons unsalted butter cubed
Cake
  • 1 stick unsalted butter softened
  • 3/4 cup granulated sugar
  • 2 large eggs at room temperature
  • 1 1/2 teaspoons vanilla extract
  • 1/2 teaspoon fine sea salt
  • 1 1/4 cups all-purpose flour
  • 1 teaspoon baking powder
  • 14 oz plums I use Italian (European) plums

Instructions

  • Preheat oven to 350°F (175°C), with a rack in the center of the oven. Butter the bottom and sides of your pan and line the bottom with greased parchment paper, then dust the insides of the pan with flour. Set aside.
  • Make the streusel:
    Place sugar, cinnamon and butter in a medium bowl. Mash all ingredients together with a fork or your hands until the sugar mixes with the butter. Then add the flour and keep pinching together the ingredients until you get a crumbly mix. Place it in the refrigerator to chill as you make the cake.
  • Make the batter:
    Beat butter and sugar in a medium bowl until smooth and fluffy, a few minutes. Crack in the eggs one at a time, whisking after each addition. Stir in vanilla and salt. Then sift in flour and baking powder and whisk just until combined.
  • Scrape batter into prepared pan and smooth the top. Remove stones from plums and slice each plum into 4 wedges. Cover the whole cake with plum slices, one next to the other, until no empty spots are left. Sprinkle with streusel.
  • Bake cake for 50-60 minutes, until the top is golden brown and fragrant (and a cake tester inserted in the center comes out clean. It can have plum residue on it, as those will be juicy, but you don’t want to see the actual beige batter on the cake tester.)
  • Cool cake for 30 minutes or more before removing from the pan. Dust with powdered sugar before serving. Keep covered in the refrigerator and eat within 2-3 days.

Notes

Make sure you use plums that are ripe. If they're too greenish on the inside and too firm, the cake won't taste as good.