3 lbs. yams
1 to 2 tbsp. butter
1 sm. can crushed pineapple
2 tsp. cinnamon
1/2 c. brown sugar (granulated)

Peel and boil the yams for 15 to 20 minutes. Mash the yams and add the rest of the ingredients. Mix together and place in baking pans. Top with marshmallows and bake at 350 degrees until golden brown.