Strawberry Crumble Bars with a Jammy Berry Center

Strawberry Crumble Bars

These thick strawberry crumble bars have a firm, buttery base, a visible red fruit layer, and a chunky golden topping. One cold-butter crumb mixture makes both the base and topping; fresh strawberries and cornstarch bake into the middle.

The filling needs to bubble at the edges before the bars come out of the oven, then cool completely before cutting. That wait gives the strawberry layer time to set so the slab can be cut into substantial squares.

Ingredients for Strawberry Crumble Bars

• 2 1/2 cups all-purpose flour (300g)
• 3/4 cup granulated sugar (150g), divided
• 1 teaspoon baking powder
• 1/4 teaspoon fine salt
• 1 cup (2 sticks) unsalted butter, cold and cubed (225g)
• 1 large egg
• 1 teaspoon vanilla extract
• 2 cups fresh strawberries, hulled and chopped (300g)
• 2 tablespoons cornstarch (about 15g)
• 1 tablespoon lemon juice

How to Bake Strawberry Crumble Bars

1. Prepare the pan: Preheat the oven to 350°F (175°C). Line an 8-inch square baking pan with parchment, leaving overhang on two sides to lift out the cooled bars.
2. Make the crumb mixture: Whisk together the flour, baking powder, salt, and 1/2 cup of the sugar. Cut in the cold butter with a pastry cutter or your fingertips until coarse crumbs form. Mix in the egg and vanilla just until the mixture forms loose clumps; do not work it into a smooth dough.
3. Press the base: Set aside about one-third of the crumb mixture. Press the rest evenly into the pan, reaching the corners without packing it into a hard layer.
4. Add the strawberries: Toss the strawberries with the remaining 1/4 cup sugar, cornstarch, and lemon juice. Let stand briefly, then spoon the fruit over the base, leaving any pooled juice in the bowl.
5. Add the topping: Scatter the reserved crumb mixture over the berries in loose, irregular clumps. Leave some fruit visible between the crumbs; do not press the topping flat.
6. Bake: Bake uncovered on the center rack. Begin checking at 40 minutes; the bars will take about 45–50 minutes. Look for lightly golden crumbs with a few deeper golden peaks and strawberry filling bubbling at the edges, without a pool of thin juice. If the top browns before the filling bubbles, tent the pan loosely with foil and continue baking. Pan material, oven temperature, and berry moisture can affect the time; a metal pan may bake faster than glass.
7. Cool and cut: Cool completely in the pan for at least 1 1/2 hours. Lift out the slab with the parchment and cut into 9 thick squares with a sharp knife. If the bars are still difficult to slice, chill them briefly first.

How to Keep the Strawberry Layer from Getting Watery

Use fresh strawberries and measure the cornstarch. Sugar draws juice from the berries as they stand, so transfer the fruit without pouring any pooled liquid onto the crust. Frozen strawberries release more liquid and are not a direct swap for this filling without an adjusted recipe.

Why the Bars Need to Cool Before Cutting

The strawberry layer is soft when hot and firms up as it cools. Lifting or slicing the slab too early can make the layers slump and the topping break apart. A brief chill can help with cleaner cuts, but it cannot replace baking until the fruit bubbles at the edges.

Serving and Storage

Serve at room temperature, plain or with vanilla ice cream or whipped cream. Store fully cooled bars in an airtight container in the refrigerator for up to 4 days. Let chilled bars sit briefly at room temperature for a softer bite.

To freeze, place cooled bars in an airtight freezer-safe container with parchment between layers for up to 3 months. Thaw overnight in the refrigerator, then let them approach room temperature before serving.

Nutrition

Approximate nutrition per bar, based on 9 bars: 395 calories, 5g protein, 21g fat, and 47g carbohydrates. Per 100g: approximately 355 calories, 4g protein, 19g fat, and 42g carbohydrates. Values vary with ingredient brands, berry moisture, and baked weight.