Just the old family go to -
You figure out how many you need to make based on your group -
Ruby Garnet Yams -
Butter
Brown Sugar
Marshmallows
Peel yams and slice into 1 1/2" slices, then par boil.
Lay into buttered / oiled casserole dish
Cover tops in melted butter
Sprinkle brown sugar over tops
Sprinkle marshmallows over entirety of dish
Cover and bake at 350 for 45 minutes.
Just like grandma used to make