This recipe creates a sweet and tart rhubarb crisp with a buttery oat topping. Perfect for a spring dessert!
* For a tangier crisp, reduce the granulated sugar to 1/4 cup.
* You can substitute frozen rhubarb for fresh. Thaw it completely and drain off any excess liquid before using.
* Feel free to add other spices to the topping, such as nutmeg or allspice.
* Leftovers can be stored in the refrigerator for up to 3 days.