01 -
Preheat the oven to 350°F (175°C). Line a 9×13-inch baking dish with parchment paper, leaving an overhang for easy removal.
02 -
In a large bowl, whisk together the flour, sugar, and salt for the shortbread crust. Cut in the cold, cubed butter using a pastry cutter or your fingers until the mixture resembles coarse crumbs.
03 -
Press the shortbread mixture evenly into the bottom of the prepared baking dish. Bake for 15-20 minutes, or until the edges are lightly golden.
04 -
While the crust is baking, prepare the rhubarb filling. In a large bowl, combine the chopped rhubarb, sugar, cornstarch, vanilla extract, salt, and lightly beaten eggs. Stir until well mixed.
05 -
Pour the rhubarb mixture over the pre-baked shortbread crust, spreading it out evenly. Bake for an additional 30-35 minutes, or until the filling is set and the top is golden brown.
06 -
Allow the bars to cool completely in the baking dish. Once cooled, use the parchment paper overhang to lift the bars out of the dish. Cut into squares and serve.