Using a vegetable peeler, peel the skins off of the apples.
On a cutting board, use a knife to cut and then dice the apples.
Place the diced apples into a large pot.
Cover the pot and heat to medium and let the apples simmer for 3 hours, stirring occasionally to prevent burning.
Once the apples are soft, use and Emersion Blender and blend the apples.
Sanitize jars and seals, then place a canning funnel into a jar and ladle applesauce into the jars leaving 1/2-inch head space.
Place a seal on each jar and then add the rings and close them to just tight and not fully tight.
Fill a canning pot with water and place on the stove and turn the heat to medium high.
Place the sealed jars in the canning rack and then gently place the rack into the canning pot.
Simmer the applesauce jars in the canning pot for 10 minutes.
Use a can lifter to remove the jars from the canning pot and transfer then to a cooling rack and allow then applesauce jars to cool and set for 24 hours.
Lable each jar with "Applesauce" and the date.
Store in a cool and dry place and use within 12 months.