Blueberry Crumble Bars
These blueberry crumble bars feature a buttery crumb base, a vibrant blueberry layer, and a crunchy streusel top, perfect for any occasion.
Ingredients
Crumb Base and Topping
- 1.5 cups all-purpose flour
- 0.5 teaspoon baking powder
- 0.125 teaspoon salt
- 1 stick cold salted butter, cubed
- 1 large egg
- 0.5 cups sugar (for crumbs)
Blueberry Filling
- 1 pint blueberries (fresh or frozen) If using frozen, do not thaw completely
- 0.25 cups sugar (for berries)
- 1 8 lime juice (about 1 tablespoon + 1 teaspoon)
- 2 teaspoons cornstarch
Instructions
Preparation
- Preheat the oven to 375°F. Butter a 9x9 glass baking dish and set it aside.
- In a mixing bowl, whisk together the flour, 1/2 cup sugar, salt, and baking powder.
- Add the cold, cubed butter and egg. Use a fork, fingers, or a pastry cutter to work the butter into the dry ingredients until the mixture forms a coarse crumble.
- Press half of the crumb mixture evenly into the bottom of the prepared baking dish.
Blueberry Filling
- In another bowl, whisk the lime juice with the remaining 1/4 cup sugar and cornstarch until smooth.
- Gently toss in the blueberries to coat.
- Spread all the coated blueberries over the pressed crust evenly.
- Sprinkle the remaining crumb mixture over the berries until nearly covered.
Baking
- Bake for 45–50 minutes until the blueberry filling is bubbling and the top is a deep golden brown.
- Cool the bars completely before cutting. Refrigerate overnight for the cleanest slices.
Notes
Serve warm with vanilla ice cream or whipped cream. For storage, keep in an airtight container for up to 2 days or refrigerate for up to 5 days. Freeze for up to 2 months.