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Recipe

Blueberry Streusel Bars with Lemon-Cream Filling

Scott Phillips

Yield: Yields 24 bars.

Always a hit at summer picnics, these addictive squares strike the perfect balance between tart and sweet and chewy and crunchy.

Ingredients

  • 8 oz. (1 cup) unsalted butter, softened; more for the pan
  • 13-1/2 oz. (3 cups) all-purpose flour
  • 1-1/2 cups old-fashioned rolled oats (not quick oats)
  • 1-1/3 cups packed light brown sugar
  • 1 tsp. table salt
  • 1 tsp. baking powder
  • 1 large egg, separated
  • 14-oz. can sweetened condensed milk
  • 1/2 cup fresh lemon juice
  • 2 tsp. grated lemon zest
  • 2-1/2 cups room-temperature blueberries (about 13 oz.), washed and drained on paper towels

Nutritional Information

  • Calories (kcal) : 270
  • Fat Calories (kcal): 90
  • Fat (g): 10
  • Saturated Fat (g): 6
  • Polyunsaturated Fat (g): 0.5
  • Monounsaturated Fat (g): 2.5
  • Cholesterol (mg): 35
  • Sodium (mg): 140
  • Carbohydrates (g): 41
  • Fiber (g): 2
  • Protein (g): 4

Preparation

  • Position a rack in the center of the oven and heat the oven to 350°F. Line a 9×13-inch metal baking pan with foil, leaving a 1-inch overhang on the ends. Lightly butter the bottom and sides of the foil.

    In a large bowl, combine the flour, oats, sugar, salt, and baking powder. Using your fingers, blend the butter completely into the flour mixture. Transfer 2 cups of crumb mixture to another bowl and reserve for the topping. Blend the egg white into the remaining crumbs and then press the mixture into the bottom of the pan to form a level crust. You can tamp it with the bottom of a measuring cup to even it out. Bake the crust until it starts to form a dry top, 10 to 12 minutes.

    Meanwhile, in a medium bowl, whisk the condensed milk, lemon juice, lemon zest, and egg yolk. Let this mixture stand for 5 minutes; it will begin to thicken.

    Sprinkle the blueberries evenly over the hot crust and then drop spoonfuls of the lemon mixture over the blueberries. Spread gently with a spatula to distribute a little more evenly, but take care not to crush the berries; it’s fine if the lemon mixture isn’t perfectly even. Bake until the lemon mixture just begins to form a shiny skin, 7 to 8 minutes.

    Sprinkle the reserved topping over the lemon-blueberry layer, pressing the streusel between your fingers into small lumps as you sprinkle. Bake until the filling is bubbling at the edges and the topping is brown, 25 to 30 minutes.

    Let the bars cool in the pan on a rack until just warm, about an hour. Carefully lift them out of the pan using the foil overhang and transfer to a wire rack to cool completely. Remove the foil and cut into 24 bars when cool. The bars may be stored at room temperature for a few hours but otherwise should be kept in the refrigerator.

Tip

Be sure to use room-temperature berries. Cold fruit straight from the refrigerator will prevent your dessert from baking evenly.

Reviews

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Reviews (47 reviews)

  • kilgabeast | 09/14/2019

    Delicious and an exceptionally forgiving recipe. I've failed to separate the egg at times, used less/more or frozen blueberries. If you pay attention and think the substitutions through (e.g., if you use frozen berries, then thaw them first and bake a little longer to deal with the extra liquid), this is a fantastic, and virtually fool-proof recipe.

  • TheEarlofGrey | 05/08/2019

    Was making these - again - and couldn't believe I never took the time to say this is one of my favorite recipes EVER. I use 3 cups blueberries also. Always a hit, no matter where I take them!

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