In a small pan over medium heat, add the cherries with a spritz of cooking spray. Let cook for 5 minutes.
Add the wine and sugar. Let bubble and reduce for 5 minutes. Add the stock, and let simmer for 10 minutes more, reducing the heat as needed to achieve bubbles but not a rolling boil.
Right before serving, add the pepper and swirl in the butter. The cherries should be cooked but not falling apart.
Serve over the protein of your choice, topped with the scallions. Enjoy!