01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a large bowl, combine flour, oats, brown sugar, cinnamon, and salt. Pour in melted butter and stir until mixture resembles coarse crumbs.
03 - Reserve 3/4 cup of the mixture for topping. Press remaining mixture firmly into the bottom of the prepared pan to form the crust.
04 - In a separate bowl, mix chopped strawberries with granulated sugar, cornstarch, and lemon juice until evenly coated.
05 - Spread strawberry mixture evenly over the crust. Sprinkle reserved crumb mixture evenly over the strawberries.
06 - Bake for 35-38 minutes, or until topping is golden and strawberries are bubbling.
07 - Allow bars to cool completely in the pan before lifting out and slicing.