Add the chopped apples, water, and cinnamon to a large saucepan or stockpot.
Bring the mixture to a boil, then reduce the heat and simmer for about 15 minutes, stirring occasionally.
Add the chopped strawberries and continue cooking for another 15 minutes, or until the fruit is very tender.
Remove the pot from the heat and let the mixture cool slightly.
Using a slotted spoon, transfer the cooked fruit to a blender, leaving most of the excess cooking liquid in the pot.
Blend until smooth. If needed, add a small amount of the reserved cooking liquid until the applesauce reaches your desired consistency.
Serve warm or chill before serving.
Notes
The sweetness of this applesauce will depend on the apples and strawberries used. Naturally sweet apple varieties can help keep the recipe free of added sugar.For a chunkier texture, pulse the mixture instead of blending until completely smooth.Store leftover strawberry applesauce in an airtight container in the refrigerator for up to 5–7 days.