Homemade Strawberry Crumble Bars with Oat Crust

Start by preparing the crust and topping. In a large mixing bowl combine 3 cups all-purpose flour, 1 1/2 cups granulated sugar, and 1 teaspoon salt. Add the zest of one large lemon for a subtle citrus lift. Cut 1/2 cup (one stick) of very cold unsalted butter into small cubes and work it into the dry ingredients until the butter pieces are about the size of peas. You can use a food processor, stand mixer, or pastry cutter; a pastry cutter or your fingertips give the best texture. Aim for small butter bits so the baked crust becomes flaky and tender.

Beat 3 large eggs lightly and add them to the flour-butter mixture. Mix until the dough becomes crumbly but holds together when pressed. If a mixer struggles to bring the dough together, use your hands to gently press and combine—the warmth of your hands will help, but work quickly to avoid melting the butter. The size of the eggs can affect texture slightly, so adjust gently if needed.

Line a 9×13-inch baking pan with a parchment paper sling, leaving an overhang for easy removal after baking. Reserve about one-third of the dough for the crumble topping and press the remaining two-thirds evenly into the bottom of the prepared pan to form the base. Make sure the base is compacted so it bakes into a sturdy crust that supports the filling.

Prepare the filling by washing, hulling, and slicing 2 pounds of fresh strawberries. Place them in a large bowl and toss with the juice of one lemon, 1 tablespoon cornstarch, and 3/4 cup granulated sugar. The cornstarch helps thicken the filling as it bakes, while the lemon juice brightens the strawberry flavor. Let the mixture sit for a few minutes so the sugar draws a little juice from the berries—this builds a juicy, jam-like filling when baked.

Spoon the strawberry mixture evenly over the pressed crust and spread gently with a rubber spatula. Crumble the reserved dough over the top to create a rustic, even layer. Bake in a preheated 350°F (175°C) oven for 45–50 minutes, or until the crumble topping turns lightly golden and the filling bubbles at the edges. Allow the bars to cool completely in the pan before using the parchment overhang to lift them out for slicing. Chilling briefly makes cleaner slices.

Serve the bars on their own or warm them slightly and pair with vanilla ice cream or whipped cream for an indulgent finish. These bars travel well to potlucks and picnics and are always a crowd-pleaser.

Ingredients

Instructions

1. Preheat the oven to 350°F (175°C). Line a 9×13-inch baking dish with parchment paper, leaving an overhang for easy removal.
2. In a large bowl combine the flour, sugar, salt, and lemon zest. Cut in the cold butter until the pieces are pea-sized.
3. Stir in the beaten eggs until the dough is crumbly but holds together when pressed. If necessary, use your hands to bring it together.
4. Press two-thirds of the dough firmly into the bottom of the prepared pan to form an even crust. Reserve the remaining dough for the topping.
5. In a separate bowl, toss the sliced strawberries with lemon juice, cornstarch, and sugar. Let sit a few minutes so the sugar draws some juice from the berries.
6. Spread the strawberry mixture evenly over the crust. Crumble the reserved dough over the top to cover the fruit.
7. Bake 45–50 minutes, or until the topping is lightly golden and the filling is bubbling at the edges. Cool completely in the pan before lifting out and slicing.

Notes

These bars freeze well in an airtight container for up to one month—thaw in the refrigerator before serving. You can substitute or combine other fresh berries, such as blueberries or raspberries, for variation. For serving, warm a piece slightly and add a scoop of vanilla ice cream or a dollop of whipped cream for an extra-special dessert.