Strawberry Oatmeal Crumble Bars (Printable)

Golden oat crumble layered over sweet strawberries — an easy, fruity bar perfect warm with vanilla ice cream.

# What You'll Need:

→ Crust and Crumble

01 - 1 1/2 cups rolled oats
02 - 1 1/4 cups all-purpose flour
03 - 1/2 cup light brown sugar, packed
04 - 1/4 cup granulated sugar
05 - 1/2 teaspoon baking powder
06 - 1/4 teaspoon salt
07 - 3/4 cup unsalted butter, melted

→ Strawberry Filling

08 - 2 cups diced fresh strawberries
09 - 1 tablespoon lemon juice
10 - 2 teaspoons cornstarch
11 - 1/3 cup granulated sugar

# Steps:

01 - Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper and lightly grease the surface.
02 - In a large mixing bowl, combine rolled oats, all-purpose flour, light brown sugar, granulated sugar, baking powder, and salt. Pour in the melted butter and blend until the mixture forms coarse crumbs.
03 - Set aside 1 cup of the oat mixture for topping. Press the remaining mixture firmly and evenly into the prepared pan to create the crust base.
04 - In a separate bowl, mix diced strawberries with lemon juice, cornstarch, and granulated sugar. Stir gently until the fruit is evenly coated.
05 - Spoon the strawberry mixture evenly over the crust in the pan.
06 - Distribute the reserved oat crumble mixture evenly over the strawberry layer.
07 - Bake for 35–38 minutes, or until the oat crumble is golden brown and the filling is bubbling.
08 - Allow the bars to cool completely in the pan. Lift out using the parchment and slice into bars for serving.

# Expert Tips:

01 -
  • It’s secretly as easy as stirring and layering—and nobody suspects you whipped it up so quickly.
  • The contrast between the crumbly oat base and gooey strawberry center makes every bite a small adventure.
02 -
  • Rushing the cooling time was my downfall the first time—the bars need to cool fully or you’ll end up with more crumble than bar.
  • Swapping in frozen berries works, but always thaw and drain them first, or the filling gets watery.
03 -
  • Melted butter means zero dry patches in your crumble, so don’t skip it.
  • Letting the bars cool completely is the only way to get those picture-perfect squares—patience pays off here.