Begin by seasoning both sides of the chicken breasts generously with salt and pepper to enhance their flavor.
In a large skillet, heat the olive oil over medium-high heat. Once the oil is shimmering, carefully add the chicken breasts. Sear the chicken for about 6-7 minutes on each side, or until it develops a beautiful golden-brown crust. Once cooked, remove the chicken from the skillet and set it aside on a plate.
In the same skillet, add the butter and minced garlic. Sauté the garlic for approximately 1 minute, or until it becomes fragrant but not browned, as burnt garlic can impart a bitter taste.
Introduce the halved cherry tomatoes to the skillet, stirring them into the remaining oil and butter. Cook for about 3-4 minutes, or until the tomatoes begin to soften and release their juices.
Next, add the roughly chopped spinach to the skillet. Cook, stirring frequently, for about 2 minutes, or until the spinach has wilted and reduced in volume.
Lower the heat to a gentle simmer, then pour in the heavy cream, stirring well to combine it with the sautéed vegetables.
Add the grated Parmesan cheese and Italian seasoning to the skillet. Stir continuously until the cheese is fully melted, creating a luscious and creamy sauce that coats the vegetables beautifully.
Return the seared chicken breasts to the skillet, positioning them in the sauce. Spoon the creamy sauce over the chicken, allowing it to simmer together for an additional 5 minutes. Ensure the chicken is cooked through, with an internal temperature reaching 165°F (75°C).
Taste the sauce and adjust the seasoning if necessary, adding more salt and pepper to suit your palate.
Notes
Serve over pasta or rice and garnish with fresh basil.