Blueberry Buckle

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Preparation info

  • Difficulty

    Medium

  • Serves

    8 to 12

Appears in

The Baking Bible

By Rose Levy Beranbaum

Published 2014

  • About
Oven Temperature 375°F/190°C
Baking Time 30 to 40 minutes

A buckle is like a fruit crisp but with cake batter instead of crumb topping. It is a quick, easy, and delicious summer dessert—or even a breakfast—and can be made with any seasonal berries or fruit (see Variation). The light, soft cake and blueberry filling are easy to serve by simply spooning them into bowls.

Ingredients

Blueberry Filling

VOLUME WEIGHT
lemon zest, finely grated 2 teaspoons, loosely packed . 4 grams
lemon juice, freshly squeezed 2 tablespoons (30 ml) 1.1 ounces 32 grams
superfine sugar ½ cup 3.5 ounces 100 grams
cornstarch 4 teaspoons . 12 grams
fine sea salt a pinch . .
fresh blueberries 4 cups 20 ounces 567 grams

Batter Topping

VOLUME WEIGHT
2 large egg yolks, at room temperature 2 tablespoons plus 1 teaspoon (35 ml) 1.3 ounces 37 grams
sour cream cup, divided 2.9 ounces 81 grams
pure vanilla extract ¾ teaspoon (3.7 ml) . .
bleached cake flour (or bleached all-purpose flour) 1 cup (or ¾ cup plus 2 tablespoons), sifted into the cup and leveled off 3.5 ounces 100 grams
superfine sugar ½ cup 3.5 ounces 100 grams
baking powder ¼ teaspoon . 1.1 grams
baking soda ¼ teaspoon . 1.4 grams
fine sea salt ¼ teaspoon . 1.5 grams
unsalted butter (65° to 75°F/19° to 23°C) 6 tablespoons (¾ stick) 3 ounces 85 grams

Special Equipment

One 9½ inch deep dish pie plate (preferably Pyrex), or a 7 to 9 cup casserole dish, or an 8 by 2 inch square cake pan, no preparation needed

Method

Preheat the Oven

Thirty minutes or longer before baking, set oven racks at the middle and lowest levels. Preheat the oven to 375°F/190°C. Place a sheet of heavy-duty aluminum foil on the lower rack to catch any bubbling juices.

Make the Blueberry Filling

In the pie plate, stir together the lemon zest, lemon juice, sugar, cornstarch, and salt. Add the blueberries and toss to coat them.

Mix the Liquid Ingredients

In a medium bowl, whisk the egg yolks, 1 tablespoon of the sour cream, and the vanilla just until lightly combined.

Make the Batter Topping

In the bowl of a stand mixer fitted with the flat beater, mix the flour, sugar, baking powder, baking soda, and salt on low speed for 30 seconds. Add the butter and remaining sour cream. Mix on low speed until the dry ingredients are moistened. Raise the speed to medium and beat for 1½ minutes. Scrape down the sides of the bowl. Starting on medium-low speed, gradually add the egg mixture in two parts, beating on medium speed for 30 seconds after each addition to incorporate the ingredients and strengthen the structure. Scrape down the sides of the bowl.

Using a silicone spatula, drop the batter onto the blueberries, leaving a 1 inch border between the batter and the sides of the pie plate and a 2 inch space in the middle.

Bake the Cake

Bake for 30 to 40 minutes, or until a wire cake tester inserted into the center (just into the cake) comes out clean and the cake springs back when pressed lightly in the center. After 30 minutes, if the top of the cake is browning too much, cover it loosely with aluminum foil that has been lightly coated with nonstick cooking spray.

Cool the Cake

Let the cake cool in the pie plate on a wire rack until barely warm or room temperature. The flavors blend best when no longer hot.

Store

Airtight: room temperature, 2 days; refrigerated, 3 days; frozen, 3 months.

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