Heat a large skillet or pan over medium heat. Add the butter and onions, and cook until the onions soften. Then, add the garlic and cook for an additional 30 seconds to 1 minute.
2 tablespoons unsalted butter, ½ medium white onion, 2 to 3 garlic cloves
Pour in broth, cream of chicken soup, water, and heavy cream. Whisk to combine, and increase the heat slightly.
4 cups low-sodium chicken broth, 2 (10 ½ ounce) cans cream of chicken soup, 1 cup water, ½ cup heavy cream
Bring the mixture to a low boil, and add the egg noodles. Reduce the heat to a simmer uncovered for 10-12 minutes and cook until the noodles are al dente.
12 ounces wide egg noodles
Add the chicken, and continue to simmer until the chicken is warmed through. Serve with fresh parsley.
4 cups leftover chicken