Chicken and Gnocchi Soup (Olive Garden Copycat)

Name: Chicken and Gnocchi Soup (Olive Garden Copycat)
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: Italian
Ingredients: 2 tablespoons salted butter; 2 tablespoons olive oil; 1 pound chicken breast (or chicken tenderloin); 1 cup yellow onion (diced); 2 tablespoons all-purpose flour; 1/2 teaspoon sea salt; 1/2 teaspoon freshly ground pepper; 1/2 teaspoon Italian seasoning; 4 cups chicken broth; 2 cups milk; 32 ounces Gnocchi ((2 packages) or 1 package for a thinner soup); 2 cups baby spinach leaves (rinsed and pat dry); 1 cup grated carrots; 1 cup heavy cream; fresh parsley for garnish (optional)