Lemony Rhubarb Pie Recipe

In a small bowl, mix flour and salt; cut in shortening until crumbly. Gradually add ice water, tossing with a fork until dough holds together when pressed. Divide dough in half. Shape each into a disk; wrap in plastic wrap. Refrigerate 30 minutes or overnight. Preheat oven to 425 °. In a large bowl, combine the first six filling ingredients; toss to combine. On a lightly floured surface, roll one half of dough to fit a 9-in. pie plate; transfer to pie plate. Trim pastry even with rim. Add filling; dot with butter. Roll remaining dough to fit top of pie. Place over filling. Trim, seal and flute edge. Cut slits in top. If desired, sprinkle with additional sugar. Bake 10 minutes. Reduce oven setting to 350 °. Bake 40-45 minutes longer or until crust is golden brown and filling is bubbly. Cool on a wire rack.