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sliced squares of sourdough bluberry coffee cake on a wire rack

Sourdough Blueberry Coffee Cake

  • Author: Megan Keno
  • Prep Time: 20 Minutes
  • Cook Time: 45 Minutes
  • Total Time: 1 hour 5 minutes
  • Yield: 12-16 Slices 1x
  • Category: Breakfast
  • Method: Oven
  • Cuisine: American


Need something to make with leftover sourdough starter? This sourdough blueberry coffee cake will make quick work of that, with fresh blueberries and crumble topping!


Units Scale

Crumble Topping –

  • 1/4 cup Sugar
  • 1/2 cup Brown Sugar
  • 11 1/4 cup Flour – start with 1 cup, add more as needed
  • 1 tsp Cinnamon
  • 1/2 cup Butter, cold and cut into cubes (If you use unsalted butter, add 1/4 tsp Salt to this list. If you use salted butter, no more salt is needed.)

Sourdough Blueberry Coffee Cake

  • 1/2 cup Butter, melted and cooled. (If you use unsalted butter, add 1/4 tsp Salt to this list. If you use salted butter, no more salt is needed.)
  • 1 cup Sugar
  • 2 Eggs
  • 1/2 cup discarded Sourdough starter
  • 1/2 cup Sour Cream
  • 1/2 tsp Vanilla
  • 1/4 tsp Almond Extract
  • 1 3/4 cup Flour
  • 1 tsp Baking Powder
  • 1/2 tsp Baking Soda
  • 1 tsp Cinnamon
  • 2 cups Fresh Blueberries


*Recipe updated 5/13/2022 for a 13″x 9″ baking pan.*

Preheat oven to 350 degrees. Spray a 13″×9″ baking pan with non stick spray. Line it with parchment paper, and spray the parchment again. Set aside.

To make the crumble topping, combine all the ingredients into a bowl, and using your hands, squeeze it all together until a course crumble forms. To save time, you can also do this in a stand mixer, mixing the ingredients with a paddle attachment on low speed until a crumble just starts to form. Remove and use your hands to press it all together and them crumble it into large pieces. Place it in the fridge to chill until ready to use.

In the same stand mixer bowl, beat together the sugar and eggs until light and fluffy. With the mixer on low, add in the melted and cooled butter, sourdough starter, sour cream, vanilla and almond extract. Mix until just combined. Scrape the bowl once, to ensure that nothing is lingering at the bottom of the mixing bowl.

In a large bowl, whisk together the flour, baking powder, baking soda, and additional cinnamon. Turn the mixer on low, and add in the dry ingredients a 1/2 cup at a time. Scrape the bowl once to ensure nothing is sticking to the bottom of the bowl. Do not overmix. Pour the dough into the prepared pan and smooth it out to the edges and corners. It will be sticky, so spray a spatula with non stick spray to help spread it out without sticking.

Place one cup of the blueberries on top of the batter, and lightly press them into the dough so they stick. Sprinkle half of the chilled crumble on top of the blueberries. Repeat with the other cup of blueberries, and last half of the crumble.

Bake for 30-35 minutes. It may take up to 40 minutes to bake through depending on your oven and the type of pan you use. Porcelain baking pans tend to take longer to bake. When a toothpick comes out clean, it is done. Remove and place on a wire cooling rack. Slice and serve when cooled completely.


Adapted from The Clever Carrot’s Sourdough Blueberry Crumb Cake 

Keywords: Blueberry, Cake, Coffee Cake, Sourdough, Recipe, Sourdough Discard