USDA MEDIAN BERRY · 12.7 mm · 1.5 gFREE · NO SIGN-UP
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Baked Goods

Blueberry Buckle

Prep20 min
Cook50 min
Total1 hr 10 min
Yield9×9 pan · serves 9
DifficultyMedium

Ingredients

  • 2 cupsall-purpose flour
  • 2 1/2 tspbaking powder
  • 1/2 tspfine salt
  • 1/2 cupunsalted butter, softened
  • 3/4 cupgranulated sugar
  • 1large egg
  • 1 tspvanilla extract
  • 1/2 cupwhole milk
  • 3 cupsfresh blueberries≈ 297 median blueberries
  • 1/2 cupgranulated sugar (for streusel)
  • 1/3 cupall-purpose flour (for streusel)
  • 1/2 tspground cinnamon (for streusel)
  • 4 tbspcold unsalted butter, cubed (for streusel)

Steps

  1. Preheat oven to 375°F (190°C). Butter a 9×9-inch pan.
  2. Whisk the 2 cups flour, baking powder, and salt.
  3. Cream the softened butter with 3/4 cup sugar until light, about 3 minutes. Beat in the egg and vanilla.
  4. Add the dry ingredients alternately with the milk, mixing just until combined. The batter will be very stiff.
  5. Spread the batter in the pan — an offset spatula helps — then scatter the blueberries evenly over the top. Do not fold them in.
  6. Rub the streusel ingredients together into coarse crumbs and scatter over the berries.
  7. Bake 45–50 minutes, until a skewer inserted into the cake portion comes out clean.
  8. Cool 20 minutes before cutting. The cake rises up around the fruit as it bakes — that buckling is where the name comes from.

Notes

  • A buckle differs from a coffee cake in that the fruit sits on top and sinks in during baking.
  • The batter is meant to be stiff. If it spreads easily, you have overmixed.
A 100-gram serving of blueberries contains roughly 160 mg of anthocyaninsLaid end-to-end at 12.7 mm apiece, it would take about 30 billion berries to reach the MoonThe world's largest blueberry weighed 16.2 grams — a Guinness record set in Australia in 2020Wild lowbush blueberries are about 40% smaller than cultivated highbush onesThe United States and Canada together produce roughly half of the world's cultivated blueberriesA 100-gram serving of blueberries contains roughly 160 mg of anthocyaninsLaid end-to-end at 12.7 mm apiece, it would take about 30 billion berries to reach the MoonThe world's largest blueberry weighed 16.2 grams — a Guinness record set in Australia in 2020Wild lowbush blueberries are about 40% smaller than cultivated highbush onesThe United States and Canada together produce roughly half of the world's cultivated blueberries