Step 2: Add frosting and nuts

Spread the entire can of frosting in an even layer over the rolls. Sprinkle the walnuts (if using) over the frosting.
Step 3: Add the cake mix in two layers

The cake mix should have two pouches. Sprinkle the larger pouch of cake mix evenly over the frosting. Then, sprinkle the smaller pouch of cinnamon-brown sugar over the top. It’s a dump cake, so don’t mix it!
