1. Preheat your oven to 375°F (190°C).
2. In a large skillet, heat olive oil over medium-high heat. Season the chicken breasts with salt and pepper.
3. Sear the chicken breasts in the skillet for about 4-5 minutes on each side, until golden brown. Remove from skillet and set aside.
4. In the same skillet, add minced garlic and cook for 1 minute until fragrant.
5. Pour in the chicken broth and heavy cream, scraping up any browned bits from the bottom of the pan.
6. Add the fresh basil leaves and red pepper flakes, stirring to combine.
7. In a small bowl, mix the cornstarch and cold water to form a slurry. Add this to the sauce to thicken it. Simmer for 2-3 minutes until slightly thickened.
8. Return the chicken breasts to the skillet, spooning sauce over each one.
9. Sprinkle mozzarella cheese evenly over the chicken and sauce.
10. Transfer the skillet to the preheated oven and bake for 15-20 minutes, or until the chicken is cooked through and the cheese is melted and bubbly.
11. Let it rest for a few minutes before serving, allowing the flavors to meld together perfectly.

As you cook, remember that a dish like this is more than just the sum of its parts. Each step, each ingredient is an opportunity to infuse love and care, just as my grandmother taught me.