Rhubarb Crunch
["5 c. diced rhubarb", "2 c. sugar", "4 Tbsp. flour", "1 egg", "1 yellow cake mix", "1 stick butter"]
["Mix rhubarb, flour, sugar and egg.", "Pour in 9 x 13-inch pan. Top with cake mix and crumble.", "Top cake mix with butter.", "Bake at 350\u00b0 for 40 to 50 minutes."]
["rhubarb", "sugar", "flour", "egg", "yellow cake", "butter"]