Using a mixing bowl, toss the apples, nuts, brown sugar, and cinnamon.
Preheat the oven to 350 F.
Alternate layers of apples and yams in a greased 1.5 quart casserole dish. I used yams for the bottom layer, then apples for the next layer, then yams for the next layer, and then apples for the top layer. Place slices of butter on top.
Place the dish in the oven and bake for 45 minutes.
Recipe from Savory Tooth at https://www.savorytooth.com/cinnamon-apple-yam-bake-with-pecans/