Berry-Mallow Yam Bake

Combine the following for the crumb mixture:

1/2 cup flour
1/2 cup brown sugar
1/2 cup dry oats
1 tsp cinnamon

Cut in 1/3 cup butter.

Toss: 1 cup crumb mixture
2 cans (17oz) each drained yams
2 cups frozen, but thawed, cranberries

Place in 2-quart casserole dish and top with remaining crumbs. Bake at 350 degrees for 35 minutes. Top with miniature marshmallows, and broil about 2 minutes. Be careful not to burn.