In a large saucepan, heat the vegetable oil. Cook the onions and carrots until the onions are translucent and fragrant. Add in the kale and cook until wilted. Stir in the cornstarch. Add in the milk, and stir continuously until the mix until the mixture has thickened.
Add in the Parmesan and the Mozzarella cheese, and mix until the cheese has melted. Add in the frozen vegetables and the cooked chicken. Mix for a while, then turn off the heat. Mix in the rice.
Portion the mixture into two large freezer bags. Allow to cool before placing in the freezer.
When ready to use: Remove from the freezer in the morning and place in your fridge to defrost. (If you don’t pre-plan in the morning, you can run the bag under warm water for 5-10 minutes, or until defrosted). Dump the mixture in a medium baking dish. Bake at 375ºF for 30-40 minutes, or until warm.