Follow these straightforward steps to bring this delicious dish to life:

1. Preheat your oven to 375°F (190°C). Grease a baking dish with a little olive oil to prevent sticking.
2. In a large skillet, heat olive oil over medium heat. Add the chicken pieces and cook until they’re golden brown on the outside, about 5-7 minutes. Transfer the chicken to the prepared baking dish.
3. In the same skillet, add mushrooms and garlic. Sauté until the mushrooms are soft and the garlic is fragrant, about 3 minutes. Stir in the spinach and cook until wilted.
4. Pour the mushroom, garlic, and spinach mixture over the chicken in the baking dish. Sprinkle with dried thyme, salt, and pepper.
5. In a small saucepan, warm the heavy cream over low heat until just simmering. Pour the cream evenly over the chicken and vegetables.
6. Top with shredded mozzarella cheese and bake in the preheated oven for 20 minutes or until the cheese is bubbly and golden.
7. Once baked, let it rest for a few minutes before serving to allow the flavors to meld beautifully.

Cooking with my grandmother taught me to trust my senses — so if you feel it needs a bit more seasoning, go ahead and add that extra pinch of salt or pepper!