Wash and bake the yams (375 degrees for 1 hour). Cool, peel, and then slice about 1/2" thick Layer in a 9 x 13 pan

Cook the cornstarch, sugar, salt, water, lemon juice, and butter in a saucepan until thick, stirring constantly.  Remove from the heat and set aside

Peel, core, and slice the apples, then layer them on top of the yams.  Arrange the apples into an appealing pattern on top.

Pour and spread the sauce over the yams and apples.

Bake at 350 degrees for 50 minutes.  Allow to cool slightly.

Thanks, Kirsten, for such a yummy recipe!  I'm including in in my "favorite recipes" file!