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
Ingredients: 0.5 Aubergine; To taste Black pepper; 2 Cheese slice; 0.5 Courgette; 1 dash of Extra virgin olive oil; To taste Fine sea salt; 200 gr of Polenta flour; 0.3 Red onion; 0.5 Red pepper; 1 pinch of Rock salt; 900 ml of Water