Microwave the apples in a glass container covered with plastic wrap for 10 minutes on High or until very soft (see Note). Mash the apples into applesauce with a potato masher. Stir in brown sugar, cinnamon, and salt. Serve hot or cold.
The apples can be cooked on the top of the stove in a heavy covered saucepan. Add 3 tablespoons water and cook over medium-low heat until apples are very soft, about 20 minutes.
What This Recipe Shows
Heating causes fruit or vegetable cells to lose water and soften. Pectic substances that hold cells together convert to soluble pectins and dissolve, cells fall apart, and the fruit or vegetable becomes mushy.