PART 1:
1/2 c. flour
1/2 c. packed brown sugar
1/2 c. old fashioned oatmeal
1 tsp. cinnamon

Cut in 1/3 cup butter until mixture resembles coarse crumbs.

PART 2:

Toss 1 cup crumb mixture with 2 (17 oz.) cans yams, drained and 2 cups cranberries; place in 1 1/2 quart casserole, top with remaining crumbs. Bake at 350 degrees for 35 minutes.

PART 3:

Sprinkle with 1 1/2 cups miniature marshmallows. Broil until lightly browned.