When making Hamburger Helper Sauce pour the sauce into the bowl or pan or whatever you're making it in and then slowly add water to the sauce.
Don't add to much water at a time because that can make the Hamburger Helper Sauce Runny.
You want to slowly add the water until it's thick enough and not too thin.
Keep stirring the sauce as you add the water and it should remain thick and if not then you added too much water.
You can add some cornstarch to help thicken the Hamburger Helper Sauce if it's already too thin.
You can also use milk in the Hamburger Helper Sauce instead of water which also helps to thicken the Hamburger Helper Sauce up.