This blueberry buckle is everything you want in a quick, cozy bake. It’s soft in the middle, loaded with sweet berries, and topped with a buttery crumble that adds the perfect crunch. Mix the topping, make the batter, layer it all in a pan, and pop it in the oven. In less than an hour, you’ll have a warm, homemade treat ready to enjoy.
Start by preheating your oven to 375 °F and lightly greasing an 8x8-inch baking dish.
To make the topping, stir the flour and sugar together in a small bowl, then work in the butter using a fork until the mixture forms soft, crumbly clumps. Place it in the fridge to chill while you move on to the cake.
In a medium bowl, whisk together the flour, baking powder, and salt.
In a separate bowl, beat the butter and sugar until light and fluffy. This should take about 2 minutes with a hand mixer or stand mixer.
Add the eggs one at a time, then mix in the vanilla. Scrape the bowl as needed to keep everything well blended. Slowly add the dry ingredients, alternating with the milk. Mix in a third of the flour, then half the milk, and repeat until everything is combined. Stop mixing as soon as the batter comes together. Gently fold in 1 cup of blueberries.
Spoon the batter into your prepared dish and smooth the top. Sprinkle the chilled crumb topping evenly over the batter, then scatter the rest of the blueberries on top.
Bake for 40 to 45 minutes, or until the top is golden and a toothpick poked in the center comes out clean. Let the cake cool in the pan for 15 minutes before slicing and serving.
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Notes
Let your butter, eggs, and milk sit out before baking. They blend better and help create a soft, even texture. Just remember, the butter for the topping should stay cold.
Greasing works, but parchment paper makes cleanup easier and helps lift the cake out cleanly.
Once the dry ingredients are added, stir only until combined. Mixing too much can make the cake dense or chewy.
Give the cake time to rest and settle after baking.
Serve: Top with a dusting of powdered sugar, vanilla ice cream, a drizzle of glaze, or a spoonful of whipped cream.Store: Cool the cake fully before storing. Wrap it in plastic or keep it in an airtight container. It stays fresh for 2 days at room temp or up to 5 days in the fridge. For freezing, wrap slices in plastic, then foil. They’ll keep for up to a month. To serve, let a slice thaw at room temperature for 1 to 2 hours.