Polenta vegetable cheesy sandwiches

Name: Polenta vegetable cheesy sandwiches
Prep time: 30 min
Cook time: 1 h
Total time: 1 h 30 min
Yield: 2 servings
Cuisine: Italian
Ingredients: ½ Aubergine; To taste Black pepper; 2 Cheese slice; ½ Courgette; 1 dash of Extra virgin olive oil; To taste Fine sea salt; 200 gr of Polenta flour; ¼ Red onion; ½ Red pepper; 1 pinch of Rock salt; 900 ml of Water