Prepare the Cherry Tomato Confit
In a small bowl or oven-safe dish, combine cherry tomatoes with peeled garlic cloves, a sprig of fresh rosemary, a generous pinch of sea salt, and enough extra virgin olive oil to coat everything well. Toss gently so the tomatoes are evenly coated. Transfer to an air fryer basket or oven dish and roast at 375°F (190°C) for about 12–15 minutes (or until the tomatoes are soft, blistered, and slightly caramelized). Let them cool slightly. The garlic will mellow and become sweet, and the oil will be infused with deep flavor.
Make the Fresh Basil Pesto
In a traditional stone mortar and pestle, start by crushing the garlic cloves with a pinch of sea salt until smooth. Add pine nuts and continue to crush until the mixture forms a coarse paste. Next, add fresh basil leaves in batches and pound until the mixture is broken down but still a bit textured. Gradually drizzle in olive oil while mixing to create a loose, spreadable consistency. Finally, add shredded Parmesan cheese and stir it in to combine. Taste and adjust seasoning if needed. This rustic pesto has a wonderful texture and deep, herby flavor.
Prepare Basil Chili Oil
In a small mixing bowl, add finely chopped basil leaves, minced garlic, chili flakes, and a pinch of salt. In a small saucepan or ladle, heat olive oil until hot but not smoking. Carefully pour the hot oil over the basil mixture — it will sizzle and release an amazing aroma. Let it sit for 5–10 minutes to infuse. This spicy, herby oil will add depth and a gentle kick to the sandwich.
Toast the Bread
Slice a rustic Italian loaf into thick sandwich-sized pieces. Heat a griddle or cast-iron pan over medium heat. Brush each slice with olive oil on both sides. Place on the hot pan and toast until golden brown and crispy on the outside but still slightly soft inside. This step adds texture and a nutty flavor that balances the creamy and juicy toppings.
Assemble the Sandwich
Place the toasted bread slices on a clean surface. Spread a generous layer of fresh basil pesto on the open face of one slice. Top with a handful of spring mix or fresh arugula. Gently place a whole burrata ball over the greens. Using a knife, carefully open the burrata to reveal its creamy center and spread it slightly. Spoon the warm cherry tomato confit (including a bit of the flavored oil and garlic) over the burrata. Drizzle some basil chili oil on top, followed by a splash of balsamic vinegar. Sprinkle with crushed sea salt and freshly cracked black pepper. Place the second slice of toasted bread on top, press lightly, and serve immediately.
