Preheat oven to 375°F and line a baking sheet with parchment paper. Using a rolling pin, flatten each slice of bread. Evenly spread about 1 tbsp cookie butter on top of each slice of bread, and roll up tightly, setting seam side down. In a shallow bowl, beat together the egg, milk, and ? tsp cinnamon. Dip each roll up into the egg mixture to coat completely, sake off the excess, and place seam side down on the prepared baking sheet.

Bake for 10 minutes, remove from the oven, and brush the top of each roll-up with melted butter. Flip the roll-ups and brush the other side with butter. Return the pan to the oven and bake for another 10 minutes. While the roll-ups finish baking, in a small bowl, combine the sugar and remaining ¼ tsp cinnamon. Immediately after taking the roll-ups out of the oven, roll each one in the cinnamon sugar mixture.