Preheat your oven to 350°F (175°C) to prepare for baking.
In a large mixing bowl, combine the cooked shredded chicken, steamed cauliflower, and steamed broccoli. Toss gently to mix all the ingredients evenly.
In a separate bowl, whisk together the heavy cream, softened cream cheese, garlic powder, onion powder, thyme, salt, and black pepper until the mixture is smooth and homogenous.
Pour the creamy mixture over the chicken and vegetable blend, stirring thoroughly to ensure everything is well-coated in the creamy sauce.
Carefully transfer the combined mixture into a greased 9x13 inch casserole dish, spreading it out evenly with a spatula.
In a small bowl, combine the almond flour with half of the shredded cheddar cheese. Mix well, then sprinkle this blend evenly over the top of the casserole to create a crunchy layer.
To finish, sprinkle the remaining cheddar cheese over the almond flour topping, ensuring an even cheesy crust across the entire casserole.
Place the dish in the preheated oven and bake for approximately 25-30 minutes, or until the casserole is bubbly and the top turns a beautiful golden brown.
Once baked, remove the casserole from the oven and let it cool for about 5 minutes. Just before serving, garnish with the finely chopped green onions for a fresh touch.
Notes
Serve the casserole in individual portions, garnished with extra green onions for a pop of color and flavor.