Easy Creamy Chicken Tetrazzini Recipe

Name: Easy Creamy Chicken Tetrazzini Recipe
Prep time: 5 min
Cook time: 45 min
Total time: 50 min
Cuisine: American, Italian
Ingredients: 8 oz Spaghetti (uncooked); 2 cup Cooked chicken (diced); 1 tbsp Olive oil; 1/2 cup Onion (diced (about 1/2 medium onion)); 2 cloves Garlic (minced); 1/4 cup Butter (unsalted); 1/4 cup All purpose Flour; 1 1/2 cup Chicken stock; 1/2 cup Frozen peas; 1 3/4 cup Parmesan cheese (divided); 1 cup Milk; 1 tsp Kosher salt; 1/2 tsp Black pepper; 1/4 tsp Nutmeg (ground)