Sweet Potato Casserole

3 cups sweet potatoes mashed (6-8 large)
1/2 cup sugar
1 egg
2 Tbl Butter
3/4 tsp vanilla

Scrub dirt from potatoes and boil them whole (with skin on) in a large pot for approx 1 hour, until fork-tender.  Drain water from pot and peel skins from potatoes (they should come off easily).  Put sweet potatoes, sugar, egg, butter and vanilla in a Bosch and mix.  Spread potatoes into 9x13 pan.

Topping:
1/2 cup butter
1/3 cup self-rising flour
1 cup brown sugar
1 cup chopped nuts (pecans)
1 cup coconut

Melt butter into flour.  Mix together brown sugar, nuts and coconut and add to butter/flour mixture.  Spread topping over potatoes and bake at 350 degrees until done (about 45 min)