How to Make It
Preheat oven to 375ºF. In a pan, cover potatoes with cold water by 2 inches. Bring to a boil. Reduce heat; simmer until just tender, 15 to 20 minutes. Drain; return potatoes to pot. Add molasses, 3/4 tsp. cinnamon, 3/4 tsp. salt, allspice and nutmeg; mash. Fold in eggs. Spread in a 2-quart baking dish.
In a skillet, melt butter over medium heat. Add apples and remaining 1/2 tsp. cinnamon and 1/4 tsp. salt; sauté until apples are golden, about 5 minutes. Spoon over potatoes; sprinkle with nuts. Bake until apples are tender, 25 to 30 minutes.