Butter baking dish.

Preheat oven to 350 degrees.

Place 1/3 can of yams into baking dish.

Place 1/3 of brown sugar on top of yams.

Place 4 pats of butter on brown sugar.

Repeat 2 more times.

Place lid on baking dish or cover with foil. Place in oven for 20 minutes. Remove lid, place marshmallows on top to cover yams. Place back in oven uncovered for 10 minutes until marshmallows are lightly browned.

Serve & Enjoy!