Last year, I made cake balls for the party and everyone liked them, so now it's tradition.
I use this recipe for best birthday cake, except I only used 4 cups of flour (instead of 4 cups and 2 tablespoons), I used regular all-purpose flour instead of cake flour and I baked in a single large casserole dish instead of two round pans. I also made the frosting, but I used 2 cups of sour cream (because that's how much comes in a container) and omitted the instant espresso.
After I baked it, this is what it looked like.
The next morning, I crumbled the cake and made the frosting.
Crumbling cake is best done with your best tools: clean hands.
You may want to start adding the frosting slowly at first; you'll know you have enough when the balls start to hold together on their own. It's too much frosting if it falls apart as a pile of mush in your hand. That's ok though - cake balls are forgiving. Just mix it back in with some dry cake crumbs until you get the right consistency.
And there you have it: cake balls. This made 52 not-quite-evenly-sized balls, minus the bites that I snuck while I was making them.