Creamy Tuscan Chicken with Mushrooms, Spinach, & Cherry Tomatoes

Name: Creamy Tuscan Chicken with Mushrooms, Spinach, & Cherry Tomatoes
Cook time: 35 min
Total time: 35 min
Cuisine: Italian
Ingredients: 1 (142 g) pkg baby spinach; 0.91 kg chicken thighs, boneless skinless; 0.45 kg cremini mushrooms; 2 cloves garlic; 1 small pkg grape tomatoes; 237 ml heavy whipping cream; 57 g Parmesan cheese; 1 medium yellow onion; black pepper; butter, unsalted; crushed red pepper; Italian seasoning; salt