Peel the apple and cut it into pieces removing the core.
Steam the apple for 5 minutes to get it soft.
Place the apple in the Baby Bullet or other blender along with the water.
Blend for 15 seconds or until smooth. Stir in the cinnamon if desired.
Divide into 1-2 tablespoon servings for babies under 6 months or in 1 ounce servings for older babies. Keep in the refrigerator for 3 days or in the freezer for 1 month.