In a large skillet, heat the olive oil over medium heat. Add the broccoli and cauliflower rice, and sauté for about 3 minutes until slightly tender.
Add the chopped spinach to the skillet and cook for an additional 2 minutes, allowing it to wilt. Remove from heat and set aside.
In a mixing bowl, combine the softened cream cheese, sour cream, garlic powder, onion powder, Italian seasoning, and half of the shredded cheddar cheese. Stir until the mixture is smooth and well combined.
In a large casserole dish, combine the shredded chicken, sautéed vegetables, and the cream cheese mixture. Fold gently until everything is evenly coated.
Spread the mixture evenly in the casserole dish and top with the remaining shredded cheddar cheese.
Bake in the preheated oven for 25-30 minutes or until the casserole is hot and bubbly, and the cheese is melted and slightly golden.
Once done, remove from the oven and let it cool for a few minutes before garnishing with sliced green onions on top.
Notes
Let the casserole cool for a few minutes before serving.