"M&m's" Brownie Sundae Cake

Yield:	12 Servings
Categories:	Cakes, Desserts

21	oz	Fudge brownie mix; prepared as for cake-like brownies
1	c	"M&M's" Semi-Sweet Chocolate Mini Baking Bits
1/2	c	Chopped nuts; optional
1	qt	Vanilla ice cream; softened
1/4	c	Caramel or butterscotch ice cream topping