Peel the onion and 2 cloves of garlic, dice them finely. Clean, wash and cut 1 yellow pepper and approx. 300 g Hokkaido pumpkin into approx. 1 cm pieces.
Heat 3 tablespoons of olive oil. Sauté onion and garlic in it. Add pumpkin and paprika pieces and fry for about 4 minutes while stirring. Add 50 g black olives (without stone) and 1 tin (425 ml) cherry tomatoes, bring to the boil. Wash 6 stalks of thyme, shake dry, remove the leaves and add to the ratatouille. Simmer for about 5 minutes. Season with salt, pepper and sugar.
For the raclette: Cut 250 g mountain cheese (e.g. Comté) into 8 slices and distribute in eight pans. Add approx. 2 tbsp. ratatouille to each pan. Fry in the raclette machine until the cheese has melted.