Preheat the oven to 350 degrees F. Spray a 1-quart baking dish with cooking spray and set aside.
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. Mix well.
Spread the mashed sweet potato mixture 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.
Turn on the oven broiler and return the dish to the upper-middle rack. Broil for 1-2 minutes, or until marshmallows are lightly browned.
Remove from the oven and enjoy!
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Notes
How to Use Fresh Sweet Potatoes in this Recipe:
1. Peel and cube 4 to 5 medium sweet potatoes and add to a pot of cold water on the stove, covered with water completely.2. Bring the pot to a boil, then lower the heat to a simmer. Allow the sweet potatoes to cook for about 15 to 20 minutes until they are very tender to pierce with a fork.3. Drain the sweet potatoes and continue the recipe as stated.
How to Reheat Sweet Potato Casserole:
1. Preheat your oven to 350 degrees.2. Cook leftover sweet potato casserole for 20 to 25 minutes.(You can also reheat a piece in a preheated air fryer at 320 degrees for 4 to 5 minutes)