Easy Summer Berry Crumble Bars – Best 30-Minute Dessert

These Summer Berry Crumble Bars are my go-to when the farmers' market overflows with ripe berries. They're simple to throw together and taste like a warm hug on a plate.

The buttery crust doubles as a crumbly topping, so you get that satisfying crunch with every bite. Plus, they're sturdy enough to pack for a picnic or enjoy on the porch with a cold glass of lemonade.

I love how versatile they are – you can use any mix of berries you have on hand. Let's get baking!

About the Ingredients

1 1/2 cups (190g) all-purpose flour

Provides structure. For a gluten-free version, use a 1:1 gluten-free flour blend.

1/2 cup (100g) granulated sugar

Adds sweetness to the crust. You can reduce to 1/3 cup if you prefer a less sweet base.

1/2 teaspoon baking powder

Helps the crust rise slightly for a tender texture.

1/4 teaspoon salt

Balances the sweetness and enhances the berry flavor.

1/2 cup (113g) cold unsalted butter, cubed

Cold butter creates a flaky crust. If using salted butter, omit the added salt.

1 large egg, lightly beaten

Binds the crust ingredients together. For an egg-free version, use 3 tablespoons of cold water.

3 cups (450g) mixed fresh berries (strawberries, blueberries, raspberries)

Use any combination you like. Frozen berries work too, but thaw and drain them first.

1/2 cup (100g) granulated sugar

Sweetens the berry filling. Adjust based on the tartness of your berries.

2 tablespoons cornstarch

Thickens the berry juices so the bars hold their shape. You can use tapioca starch instead.

1 tablespoon fresh lemon juice

Brightens the berry flavor. Use bottled if fresh isn't available.

Tips & Tricks

• Keep the butter cold – it makes the crust flaky, not tough.
• Don't overmix the dough – just until it comes together, or the crust will be dense.
• Let the bars cool completely before cutting – they'll be too soft when warm.
• If using frozen berries, thaw and drain them well to avoid a soggy bottom.

Step-by-Step Instructions

1. Preheat oven and prep pan

Preheat your oven to 375°F (190°C). Line an 8×8-inch baking pan with parchment paper, leaving overhang on two sides for easy lifting.

2. Make the crust mixture

In a large bowl, whisk together the flour, 1/2 cup sugar, baking powder, and salt. Cut in the cold butter using a pastry blender or your fingers until the mixture resembles coarse crumbs. Stir in the beaten egg until a dough forms.

3. Press crust into pan

Press about two-thirds of the dough evenly into the bottom of the prepared pan. Make sure it's compact so the bars hold together.

4. Prepare the berry filling

In a separate bowl, gently toss the berries with the remaining 1/2 cup sugar, cornstarch, and lemon juice until well coated.

5. Add filling and crumble topping

Spread the berry mixture evenly over the crust. Crumble the remaining dough over the top, creating a rustic, crumbly layer.

6. Bake until golden and bubbly

Bake for 35-40 minutes, or until the topping is golden brown and the berry juices are bubbling around the edges. The filling should be set but slightly jiggly in the center.

7. Cool and slice

Let the bars cool completely in the pan on a wire rack (about 2 hours). Once cool, lift out using the parchment, and slice into 9 or 12 bars.

Delicious Variations

Peach-Berry

Swap half the berries with 1 cup sliced fresh peaches.

Lemon-Blueberry

Add 1 teaspoon lemon zest to the crust and filling for extra citrus punch.

Almond-Cherry

Use 1/2 teaspoon almond extract in the filling and top with sliced almonds before baking.

How to Store Summer Berry Crumble Bars

Frequently Asked Questions

Now it's your turn! Grab your favorite berries and whip up a batch. Share your creation with #MayaBakes – I can't wait to see your summer in a pan! Happy simplifying!

Summer Berry Crumble Bars

Juicy berries nestled in a buttery crumble, these easy Summer Berry Crumble Bars are the perfect warm-weather treat.

★★★★½ 4.8 (156 ratings)

15 minPrep time40 minCook time9Servings285 kcalCalories

Print RecipePin Recipe

🧂 Ingredients

• 1 1/2 cups (190g) all-purpose flour
• 1/2 cup (100g) granulated sugar
• 1/2 teaspoon baking powder
• 1/4 teaspoon salt
• 1/2 cup (113g) cold unsalted butter, cubed
• 1 large egg, lightly beaten
• 3 cups (450g) mixed fresh berries (strawberries, blueberries, raspberries)
• 1/2 cup (100g) granulated sugar
• 2 tablespoons cornstarch
• 1 tablespoon fresh lemon juice

📋 Instructions

1. 1Preheat oven and prep pan — Preheat your oven to 375°F (190°C). Line an 8×8-inch baking pan with parchment paper, leaving overhang on two sides for easy lifting.
2. 2Make the crust mixture — In a large bowl, whisk together the flour, 1/2 cup sugar, baking powder, and salt. Cut in the cold butter using a pastry blender or your fingers until the mixture resembles coarse crumbs. Stir in the beaten egg until a dough forms.
3. 3Press crust into pan — Press about two-thirds of the dough evenly into the bottom of the prepared pan. Make sure it's compact so the bars hold together.
4. 4Prepare the berry filling — In a separate bowl, gently toss the berries with the remaining 1/2 cup sugar, cornstarch, and lemon juice until well coated.
5. 5Add filling and crumble topping — Spread the berry mixture evenly over the crust. Crumble the remaining dough over the top, creating a rustic, crumbly layer.
6. 6Bake until golden and bubbly — Bake for 35-40 minutes, or until the topping is golden brown and the berry juices are bubbling around the edges. The filling should be set but slightly jiggly in the center.
7. 7Cool and slice — Let the bars cool completely in the pan on a wire rack (about 2 hours). Once cool, lift out using the parchment, and slice into 9 or 12 bars.

👨‍🍳 Chef's Note: These bars are best enjoyed the day they're made, but they still taste amazing the next morning with coffee.

Servings: 9

Cuisine: American

Course: Dessert

Nutrition (per serving): 285 kcal · 3g protein · 44g carbs · 12g fat

Written by Maya Chen
Maya writes about sustainable living and zero-waste swaps for busy households. She focuses on small, actionable changes that fit into real life, from kitchen composting to low-impact cleaning routines. Her articles are grounded in everyday practicality rather than theory.