CASSEROLE:

3/4 stick butter
1 1/2 c. sugar (1/2 brown sugar & 1/2 white sugar)
2 c. marshmallows
3 c. sweet potatoes
1 c. milk
2 eggs

TOPPING:

3/4 stick butter
1/2 c. brown sugar
1 c. rice crispies
1 c. chopped nuts

Melt butter, sugar, marshmallows together. Add this and other ingredients to a greased dish.

TOPPING: Melt together butter and sugar. Add rice crispies and nuts. Spread over casserole mixture. Bake at 400 degrees for 20 minutes.