Cherry Crisp:

Prepare as above, except substitute 5 cups fresh or frozen unsweetened pitted tart red cherries for the sliced fruit. Increase granulated sugar to 1/2 cup and add 3 tablespoons all-purpose flour to the cherry mixture.

Rhubarb Crisp:

Prepare as above, except substitute 5 cups fresh or frozen unsweetened sliced rhubarb for the fruit. Increase granulated sugar to 3/4 cup and add 3 tablespoons all-purpose flour to the rhubarb mixture.