You want to have the nuts in good size pieces which I find hard to do in a food processor. It tends to grind them too finely. To make chopping nuts easier and less messy, use a cutting board set inside a baking sheet that has sides. If you're like me, when I'm chopping nuts a lot of them seem to end up on the floor, so by putting the cutting board inside a baking pan I eliminate this problem. They need little adornment except a dusting of confectioner's sugar.
Coffee cakes are at there best when served warm from the oven but they can be frozen.
The Great Coffee Cake recipe is adapted from Marion Cunningham's The Breakfast Book and is excellent both plain or with fruit and nuts added. This cake looks wonderful done in a Bundt pan with a dusting of confectioner's sugar. One of my son's favorite breakfast foods is cinnamon rolls. Cinnamon rolls are also known in some countries as cinnamon buns. An alternative to cinnamon rolls is the cinnamon pull-aparts.