Preheat oven to 400 degrees.
In a mixing bowl, combine rhubarb, brown sugar, butter, flour and cinnamon.
Spoon into a buttered medium casserole dish.
For topping:
Combine the topping ingredients in a bowl. Sprinkle evenly over rhubarb mixture.
Bake for 30 to 40 minutes. Test center to make sure rhubarb is cooked.
main ingredients: type of dish:dessert cuisine:season and occasion: Springdietary considerations: Array