Place a layer of pumpkin, then a layer of apples, in a 2-quart casserole. Combine 1/4 cup melted butter, sugar, cinnamon, nuts, and salt; drizzle some over apples and pumpkin. Continue alternating layers and drizzling with butter and sugar mixture until all ingredients have been used. Dot with a bit more butter. Cover casserole and bake at 350F for 45 to 60 minutes or until pumpkin and apples are tender.
*The pumpkin or squash will not cook as quickly, so slice it more thinly than the apples.