Instead of canning plain applesauce or other plain fruit, try mixing it up to make a mixed fruit puree. While this can be done for many fruits, some fruits should not be used because no home canning recommendations are available for purees of these products. They include bananas, figs, Asian pears, tomatoes, cantaloupe and other melons, papaya, ripe mango or coconut. These are best preserved by freezing for safety.
Many parents want to can their own baby food. Fruit is the only food that can be safely processed as a puree. Follow the recommendations from:
http://nchfp.uga.edu/how/general/baby_food.html