Baked Chicken and Potato Casserole

salt or to taste

heaping teaspoon sugar

heavy dashes ground black pepper

heavy whipping cream

medium-sized potatoes, peeled and cut into pieces

boneless, skinless chicken breasts, cut into cubes

slices Canadian bacon, cut into pieces

unsalted butter, cut into small pieces

heaping cup shredded cheddar cheese

stalk scallion, green part only, cut into small rounds