Roasted banana affogato

Name: Roasted banana affogato
Prep time: 15 min
Cook time: 29 h
Total time: 29 h
Yield: 16 portions
Ingredients: 350 g banana; 2 tbsp unsalted butter; 2 - 3 tbsp brown sugar; 1 tsp ground cinnamon; 1 tbsp freshly squeezed lemon juice; 140 g white sugar; 4 egg yolks; 410 g full cream milk; 1 vanilla bean pod; ¼ tsp salt; 580 g pouring (whipping) cream; brewed espresso coffee