One bag of frozen fruit
1/3 cup sugar
1/3 cup water
1 tablespoon cornstarch mixed with 1 tablespoon water
Combine fruit, sugar and water in a medium saucepan. Heat over medium heat until fruit defrosts and sauce begins to boil. Add cornstarch mixture and reduce heat to low, stirring until slightly thickened. For blueberry sauce I add a teaspoon of grated lemon zest to the fruit, sugar and water. For peaches I add about 1/2 a teaspoon of grated nutmeg (yes, grated fresh, otherwise don't bother).