Spinach Artichoke Chicken Casserole

Bahan-bahan (4 porsi)

• 4 boneless skinless chicken breasts
• 1 teaspoon red pepper flakes
• 2 cloves garlic (minced)
• 1 teaspoon salt (divided)
• 2 tablespoons butter
• 1 ½ tablespoons all-purpose flour
• 1 cup whole milk
• ½ cup cream cheese
• 10 ounces frozen chopped spinach (thawed)
• 6 ounces artichoke hearts (or quarters, roughly chopped)
• ¾ cup shredded mozzarella cheese