In the same pot, I melt 2 tbsp butter, then add 1 diced shallot, 2 minced garlic cloves, and 1 tsp Italian seasoning, cooking until fragrant, about 3 minutes. I pour in 3 ½ cups water, bring to a boil, and add 1 lb pasta, cooking until al dente, about 8 minutes, stirring often. I mix in 1 cup cream, 2 tsp mustard, ½ cup Parmesan, 2 cups spinach, and the chopped tomatoes, returning the chicken and its juices to the pot for a creamy garlicky chicken pasta.