Instructions

  1. Combine flour, sugar, oats and cinnamon.
  2. Cut in butter until mixture resembles coarse crumbs.
  3. Lightly toss 1 cup crumb mixture with yams and cranberries.
  4. Arrange in a 1 1/2 quart casserole.
  5. Sprinkle with remaining crumb mixture.
  6. Bake at 350 degrees for 35 minutes.
  7. Sprinkle with marshmallows and return to oven until marshmallows are lightly browned.