Good-Cooking - Brownie Sundae Cake

Ingredients

• 1 (19 to 20 ounce) package fudge brownie mix prepared according to directions for cake-like brownies
• 1 cup M&M's baking bits
• 1/2 cup chopped nuts, optional
• 1 quart vanilla ice cream softened
• 1/4 cup caramel or butterscotch ice cream topping (Mrs. Richards is good)