Preheat the oven to 230°C. Keep a large baking sheet handy.
1. Put the cauliflower in a mixing bowl and add the olive oil and garlic. Season with salt and pepper and mix well. Spread out the cauliflower florets on the baking sheet and roast for 10-15 minutes or until lightly charred.
2. Salad Slice the tomatoes. Arrange the tomato slices, alternating with mozzarella slices, on a large salad platter.