Trisha Yearwood's Spinach Casserole

Name: Trisha Yearwood's Spinach Casserole
Prep time: 20 min
Cook time: 17 min
Total time: 37 min
Cuisine: American
Ingredients: 3 tablespoons butter; 3 cloves of garlic, minced; 1 medium onion, chopped; Pinch of nutmeg (optional); ¼ teaspoon cayenne pepper; 1 ¼ cups heavy cream; 2 9oz packages frozen chopped spinach, thawed and drained; Salt and pepper to taste; ⅔ cup shredded parmesan cheese, divided; 3oz cream cheese; 2 tablespoons breadcrumbs