Quarter the tomatoes and place in a large bowl with the garlic and onion. Add the oil and paprika. Season well with salt and pepper and toss everything together. Arrange the vegetables on the tray and roast for 45 minutes. Set aside to cool.Optional step: while the tomatoes are still warm remove the skins for an even smoother soup.
Place the cooled tomato mixture in a blender with the cucumber, vinegar and basil. Process until smooth. (A stick blender can also be used.) Add the maas and process to combine. Cover and refrigerate overnight.
Prepare the cheese crisps just before serving. Preheat the oven to 200ºC and line a large baking tray with baking paper. Divide the cheese into 8 equal piles and arrange these on the tray allowing space for spreading. Bake the cheese for 8 minutes until fully melted and lightly golden. Do not let the cheese brown too much. Set aside to cool slightly, then gently lift off the paper and transfer to a plate.
Check the seasoning of the soup. Dish into bowls and top with a few fresh basil leaves, micro leaves and some black pepper. Serve with cheddar crisps.