Brown Sugar Potato Casserole

Directions

1. Preheat oven to 375 degrees F. and coat a large casserole dish with cooking spray.
2. Cook potatoes in boiling water for about 10 to 15 minutes or until fork tender, then drain
3. Whisk half and half with vanilla, salt, and egg until combined. Pour mixture over potatoes and beat until smooth. Spoon potato mixture into prepared casserole dish.
4. Combine flour with sugar and oats and mix in chilled butter with two knives or a pastry cutter until a coarse meal is formed. Stir in walnuts then sprinkle mixture over potatoes.
5. Bake, covered, for 15 minutes. Uncover and bake another 20 minutes or until fully heated and topping is crisp.