Peel and chop sweet potatoes. Steam until soft. (You can also boil it and peel). Once soft, mash it until smooth. Set aside.
In a pan, melt the butter. Use low-medium heat. After melting, add the all purpose cream and condensed milk. Stir and mix well. Cook at low heat until the consistency becomes thicker.
Once thickened, mix in salt and vanilla extract. Reserve around 1/2 cup for topping (this is optional). Then stir in the mashed sweet potatoes until well-blended. Cook until the sauce dries up. Continue stirring to prevent the bottom from sticking and burning.
Once cooked, transfer to a tray greased with oil or butter. Flatten and smoother the top. Let it cool.
Once cooled down, add the reserved sauce and desired toppings (I used grated cheese). You may also chill it