Place the blood sausage in a skillet and cook over low heat for 5–10 minutes.
Crumble the blood sausage using wooden spatulas, and stop cooking when it becomes tender.
If you’re making the entire recipe in one go, I recommend not cleaning the skillet after cooking the blood sausage, and instead sautéing the bananas in the same skillet so they absorb the juices from the blood sausage. Your verrines will taste even better!