Make this recipe a recipe that people in that category can eat. categories: ['dairy_free'], recipe: preheat oven to 450 degrees f. combine sugar and flour. sprinkle 1/4 of it over pastry in pie plate. heap rhubarb over this mixture. sprinkle with remaining sugar and flour. dot with small pieces of butter. cover with top crust. place pie on lowest rack in oven. bake for 15 minutes. reduce oven temperature to 350 degrees f, and continue baking for 40 to 45 minutes. serve warm or cold.

Target recipe: preheat oven to 450°f. combine sugar, flour and egg;add to rhubarb. prepare pastry and line a 9" pie plate, reserving some for top crust. add rhubarb mixture and cover with top crust;seal and flute edges. make slits in top crust to allow steam to escape. if desired, make a lattice top with top crust. bake in oven for 10 minutes; reduce temperature to 350f and continue baking 40 to 50 minutes longer or until rhubarb is cooked and pastry is a golden brown.