Pat the chicken thighs dry and season with salt and pepper.
In a 12 inch cast iron skillet (or large pan), heat olive oil over medium heat.
Once hot, add the chicken thighs and cook for 5–7 minutes per side, until golden and cooked through. Then remove them from the skillet.
Add the garlic to the pan and cook for 30 seconds.
Pour in the heavy cream. Then stir in sun-dried tomatoes and parmesan cheese. Simmer, stirring occasionally, until slightly thickened.
Add the fresh spinach and cook for a few minutes until wilted.
Return chicken to the skillet and spoon sauce over the top. Simmer the whole dish for a few minutes. Serve with pasta, rice, mashed potatoes, fresh green salad, or crusty bread.
Store creamy Tuscan chicken in an airtight container for 3-4 days. Reheat on the stovetop or in the microwave, adding a little chicken broth or heavy cream to loosen up the sauce if needed.
Notes
Chicken thighs stay more tender and flavorful than chicken breasts, but you can use 4 chicken breasts, pounded thin if you prefer.
If the sauce becomes too thick, add a splash of chicken broth or cream to loosen it back up.
Use freshly grated parmesan, so it melts smoothly into the sauce.