Mealime - Creamy Tuscan Chicken with Mushrooms, Spinach, & Cherry Tomatoes

Ingredients

• 1 ½ (142 g) pkg baby spinach
• 1 3/8 kg chicken thighs, boneless skinless
• 2/3 kg cremini mushrooms
• 3 cloves garlic
• 1 ½ small pkgs grape tomatoes
• 355 ml heavy whipping cream
• 85 g Parmesan cheese
• 1 ½ medium yellow onions
• black pepper
• butter, unsalted
• crushed red pepper
• Italian seasoning
• salt