Preheat oven to 375 degrees F.
Wash the kale, and remove the stems. Tear the leaves into smaller pieces and set aside.
In a large frying pan, cook the chopped onion and minced garlic in the vegan buttery spread. Cook over medium heat until the onion starts to soften, about 5 minutes.
Stir in the gluten free flour blend, and allow it to cook for 2-3 minutes to get rid of the raw taste.
Add the chicken broth and seasonings, then add the kale leaves. Allow the kale to cook in the sauce for about 5 minutes.
Use an immersion blender to blend the sauce in the pan. Make sure the kale gets finely chopped.
Add the pieces of chicken breasts. You can use kitchen scissors and cut the chicken breasts right into the skillet (so you don't have extra dishes to wash).
Stir in the cooked white rice and dairy free cheese shreds.
Transfer the mixture to a casserole dish, then cover the dish with foil and bake at 375 degrees F for 45 minutes.
While the casserole is baking, make the garlic breadcrumbs if you are doing that from scratch.
After 45 minutes, carefully remove the foil from the dish and sprinkle the breadcrumbs on top of the casserole. Bake for another 10 minutes.
Enjoy!