Rhubarb Crisp

Ingredients:
- 4 c. cut rhubarb, unpeeled (1/2 inch)
- 1 c. sugar
- 1/4 c. unsifted flour
- 1/2 tsp. cinnamon or more to taste
- 1/2 c. cold water
- red food coloring

Directions:
- Pour mixed dry ingredients over rhubarb pieces in a bowl.
- Add cold water and mix together.
- Add food coloring.
- Pour into a greased pan.
- Cover with topping.