Sweet Potatoes and Berries Casserole

From Southern Living.

• Ready In: 1 hr
• Serves: 8

Ingredients

• 2  lbs sweet potatoes
• 1 (16 ounce) can whole berry cranberry sauce
• 1⁄2 teaspoon ground cinnamon
• 2⁄3 cup self-rising flour
• 2⁄3 cup  firmly packed brown sugar
• 2⁄3 cup quick-cooking oats, uncooked
• 1⁄4 cup butter or 1⁄4 cup margarine, plus
• 2  tablespoons butter or 2  tablespoons margarine
• 1  cup miniature marshmallow

Directions

1. Cook potatoes in boiling water to cover for 20 minutes or until tender.
2. Let the potatoes cool to touch; peel and mash potatoes.
3. Stir in cranberry sauce and cinnamon.
4. Transfer mixture to a lightly greased 2-quart casserole.
5. In a mixing bowl, combine flour, sugar, and oats; cut in butter until mixture looks like coarse crumbs.
6. Spoon crumbs over sweet potato mixture.
7. Bake in a 375° oven for 20 minutes.
8. Top with marshmallows and bake until golden brown.