Step 1

Preheat the oven to 350 degrees F. Spray a 1-quart baking dish with cooking spray and set aside.

Step 2

Drain the canned yams, transfer them to a large mixing bowl, and mash them with a potato masher or the back of a wooden spoon. Add the melted butter, brown sugar, egg, cinnamon, and salt, mixing well. Fold in the crushed pineapple.

Step 3

Spread the mash evenly in the prepared baking dish. Bake uncovered for 30 minutes. Remove the dish from the oven and top with the marshmallows and chopped pecans.

Step 4

Turn on the oven broiler and return the dish to the upper middle rack. Broil for 1 to 2 minutes, or until marshmallows are lightly browned.