Rhubarb Crisp - cooking recipe

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

Preparation

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.