Begin by emptying both jars of baby food into a microwavable bowl and heat for 30 seconds, mix around with a metal spoon and then heat again for 30 seconds.
Add in the calcium powder. If you are crushing calcium tablets, place them into a Ziploc bag and use a metal dough roller to turn them into powder.
Take out the microwaved baby food and sprinkle in a small portion of gelatin. Do this slowly and be careful not to add the whole packet at once. You want a gooey consistency.
Blend spinach and other vegetables in a blender till it is a thick consistency.
Once the gelatin has dissolved into the baby food, it is then time to add in the calcium powder and blended vegetable mixture. This should be mixed in well.
Transfer the mixture into a flat container and smooth out the batter in the container till the surface is smooth.
Refrigerate the container for 4 hours until it is solid.
Use a butter knife to slice small cubes in even lines till you are happy with the shapes and size of the cubes.
Lay a piece of wax paper on a clean surface and turn the bowl upside down till the cubes slide out onto the wax paper.
Place the cubes in a Ziploc bag or air-tight container in the refrigerator. They do not have to be thawed before feeding.