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A freshly baked classic blueberry coffee crumb cake cooling on a wire rack.

Classic Blueberry Coffee Crumb Cake


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5 from 10 reviews

Description

This classic coffee cake features a tender buttermilk-infused crumb topped with a signature cinnamon-streusel crust and burst-in-your-mouth blueberries. Designed for precision, this recipe ensures perfectly distributed fruit and a professional bakery-grade texture in your own kitchen.


Ingredients

  • 2 cups (240 grams) All-Purpose Flour
  • 1 cup (240 ml) Buttermilk
  • 1/2 cup (100 grams) Granulated Sugar
  • 1/4 cup (57 grams) Melted Unsalted Butter
  • 2 tbsp (28 grams) Softened Unsalted Butter
  • 1 tbsp Baking Powder
  • 3/4 tsp Baking Soda
  • 1/2 cup Blueberries
  • 1/4 cup All-Purpose Flour (for streusel)
  • 1/4 cup Light Brown Sugar (for streusel)
  • 3/4 tsp Ground Cinnamon (for streusel)
  • 1/4 tsp Fine Salt
  • 2 Room Temperature Eggs


Instructions

  1. Prep the equipment. Preheat oven to 350°F and grease an 8-inch square metal baking pan to ensure even heat conduction.
  2. Mix the streusel. Combine flour, brown sugar, cinnamon, and softened butter in a bowl, rubbing until the mixture resembles coarse, pea-sized crumbs.
  3. Whisk dry ingredients. In a large bowl, combine flour, sugar, baking powder, baking soda, and salt, whisking thoroughly to aerate and distribute the leaveners.
  4. Combine wet ingredients. Whisk together the buttermilk, melted butter, and eggs in a separate bowl until completely uniform.
  5. Fold components together. Add the wet mixture to the dry ingredients and fold gently with a spatula until just combined to prevent gluten development.
  6. Assemble the cake. Spread the batter into the prepared pan, top with blueberries, and sprinkle the streusel mixture evenly over the surface.
  7. Bake the cake. Bake for 40 minutes on the center rack until the internal temperature reaches 200°F and the top is deep golden brown.
  8. Cool before serving. Allow the cake to cool on a wire rack for at least 45 minutes to stabilize the crumb structure before slicing.

Notes

  • Ensure your oven temperature is accurate by using an independent thermometer to prevent uneven baking.
  • Do not overmix the batter once the wet and dry ingredients are combined to keep the cake light and tender.
  • Using a serrated knife will allow you to slice through the crunchy topping without crushing the delicate cake below.
  • Make sure the blueberries are fresh and dry so they maintain their position on top of the batter during the bake.
  • Prep Time: 20 mins
  • Cook Time: 40 mins
  • Category: Breakfast
  • Method: Baking
  • Cuisine: American