Florentine-style chicken is served in a creamy sauce with wilted spinach and mushrooms. Flavorful and classic (and you won't believe how simple it is to make)!
Bring a large stock pot of salted water to a boil. Once water is boiling, add pasta and cook according to package directions.
While pasta is cooking, heat a skillet over medium-high heat and add oil. When oil is hot, sear chicken until golden brown on both sides and nearly cooked through, 3 to 4 minutes on each side (it will finish cooking in the sauce). Remove from skillet and set aside.
Return skillet to medium-high heat and add butter. When butter melts, add onions, garlic, and mushrooms and saute until tender, 5 to 6 minutes. Season with a pinch of salt.
Stir in flour and thyme until no dry spots remain, ~1 minute.
Pour white wine and stock over mushrooms and simmer (reduce heat if necessary) until sauce thickens, 2 to 3 minutes.
Stir heavy cream and spinach into sauce. Add chicken back to pan and nestle in sauce. Cover and cook until chicken is cooked all the way through and spinach is wilted, 3 to 4 minutes more. Season with some salt and pepper.