Preheat the Oven: Start by preheating your oven to 350°F (175°C). Line an 8x8 inch baking pan with parchment paper, leaving some overhang for easy removal later.
Make the Crust: In a medium bowl, combine the flour, sugar, and softened butter. Mix until the mixture resembles coarse crumbs. Press this mixture into the bottom of the prepared baking pan to create an even layer.
Prepare the Filling: In a large bowl, combine the strawberries, rhubarb, granulated sugar, cornstarch, vanilla extract, and salt. Stir well until all the fruit is coated.
Combine: Pour the fruit filling over the crust, spreading it evenly.
Bake: Bake in the preheated oven for about 25-30 minutes or until the top is golden brown and the filling is bubbly.
Cool: Allow the bars to cool in the pan for at least 15 minutes before carefully lifting them out using the parchment paper. Let them cool completely before slicing into squares.
Enjoy: Get ready to enjoy these delicious Strawberry Rhubarb Bars!