In a saucepan. add the cream and water. Then simmer for 5 minutes and add the chicken base. Bring to a boil and thicken with a slurry thick enough to coat a spoon. Add the cheese and green onions. Finish with salt and pepper

Spray the bottom of the 8*8 pan and place one layer of potatoes on the bottom. Layer with ⅓ of sauce and repeat 3 times, so you have 3 layers with sauce. On the top layer, spray with Pam and season with salt and pepper

Bake at 350°F with foil covering for 45 minutes, then remove foil and bake another 15 minutes until brown on top. Let stand for 10 minutes before serving