To prepare: Preheat oven to 425. Leave ice cream out while preparing first portions so it is easier to spread.
2 cups Rice Krispies
1 cup brown sugar
1 cup chopped pecans
½ cup melted butter
1 cup coconut
½ gallon vanilla ice cream
Chocolate/ caramel sauce
Mix first five ingredients for topping.
Cook at 425 for 10-15 minutes. You want to stir it every 5 minutes and cook only until the brown sugar is melted. Be careful, it burns.
Put half of the topping mixture in a 9X13 pan. Place vanilla ice cream on top. Put other half of topping mixture on. Freeze.
Drizzle with chocolate or caramel sauce before serving.