Tear bread into 8 pieces each, then add to a food processor. Pulse until bread is broken down into crumbs. This works best if bread has been given a little time to dry out. Or if you can even lightly toast. Pour breadcrumbs onto a sheet pan and toast in your convection oven, about 3-4 minutes, until browned. Be sure to watch so they do not burn. Set aside.
In a 10 inch saute pan, melt butter over medium heat. Let cook, stirring constantly, and it will start to bubble and foam. Swirl the pan around, and continue stirring. You will start to smell the nuttiness, and hear crackling. Then you will see small brown bits at the bottom of the pan, and the butter will be a darker yellow. Turn off heat, and remove 1 tablespoon butter.
Then add breadcrumbs, cinnamon, salt, and sugar to pan. Stir to coat evenly and mix well. Scoop ice cream, drizzle with extra brown butter and top with churro breadcrumbs.