So quick and easy! Simply mix sliced rhubarb with cherry pie filling, sugar, and quick-cooking tapioca, and pour the mixture into a prepared pie crust. It bakes up wonderfully sweet and tart—and is a great alternative when strawberries aren’t quite in season. Watch the video, then get Annabelle’s top-rated recipe for Rhubarb Cherry Pie. Use fresh or frozen rhubarb.