In a larger bowl add the mashed sweet potatoes.
Add the melted butter, sugar, ginger, cinnamon, nutmeg, eggs, pure vanilla extract cream to the mashed sweet potatoes. Beat the sweet potato mixture with an electric mixer until smooth.
Pour the sweet potato mixture into greased casserole dish (1 1/2 quarts).
Bake for 30 minutes. Remove from the oven and top with the mini marshmallows and bake for an additional 5 to 10 minutes. Please watch your marshmallows because all ovens are different. Enjoy!
Store leftovers in an air-tight container or cover the casserole dish with foil or plastic wrap and refrigerated. Left-overs can be reheated in the microwave or the oven.
Bake your whole sweet potatoes for 1 hour at 400°F. Allow them to cool then peel and mash.
Refrigerate leftovers and reheat in the microwave or oven.
Mama says, "Check all of your labels!"