Creating Family-Friendly Chicken Zucchini Bake is easy if you follow these simple steps:

1. Preheat the Oven: Begin by preheating your oven to 375°F (190°C).
2. Prepare the Zucchini: Slice the zucchini into thin rounds and set aside.
3. Cook the Chicken: In a skillet, heat olive oil over medium heat. Add onion and garlic, sautéing until softened.
4. Combine Ingredients: In a large bowl, combine diced chicken, sautéed onion and garlic, zucchini slices, marinara sauce, Italian seasoning, salt, and pepper.
5. Layer the Ingredients: In a greased baking dish, layer half of the chicken and zucchini mixture.
6. Add Cheese: Sprinkle half of the cheddar and mozzarella cheese over the first layer.
7. Repeat Layers: Add the remaining chicken and zucchini mixture, followed by the rest of the cheese.
8. Bake: Cover the dish with foil and bake for 30 minutes. Remove the foil and bake for an additional 5-10 minutes until golden and bubbling.
9. Cool: Allow it to cool for a few minutes before serving.
10. Garnish: Sprinkle with fresh parsley if desired for an extra touch.

These steps ensure that you create a delightful and wholesome dish that everyone will enjoy with minimal fuss!