Combine sugar and Cinnamon in a small bowl and set aside. In a shallow bowl whisk the eggs and milk until well combined, set aside.
Flatten the toast with a rolling pin then trim the crust.
Place about a teaspoon of Reese's spreads an inch from one end of the bread spread out in a strip. Roll the bread up and repeat until they're all filled.
Heat a tablespoon of butter in a skillet over medium heat. Place the rolls in the egg mixture turning to coat on all sides then place them in the pan seam side down. Cook in batches until golden brown, turning them to cook and brown on all sides. Add butter to the pan as needed.
Add the hot rolls from the pan to the cinnamon sugar and roll until completely covered in sugar.