Make this recipe a recipe that people in that category can eat. categories: ['low_fat'], recipe: mix flour, rolled oats, brown sugar, margarine and cinnamon until crumbly: press half of this mixture into a 9" greased pan. cover with chopped rhubarb. combine sugar, cornstarch, and water. cook until thick and clear in a small saucepan. remove from heat and add vanilla. pour over rhubarb. top with remaining crumbs. bake at 350°f for 1 hour.

Target recipe: preheat oven to 350, grease 9x13 baking dish. mix oats,brown sugar,flour and butter together, put 1/2 of mixture into the bottom of baking dish, place rhubarb over the mixture and sprinkle with cinnamon. in medium saucepan cook water,sugar,cornstarch and vanilla over medium heat until thick, let cool slightly,pour over rhubarb and sprinkle remaining oats+flour mixture on top bake for 30-35 minutes.