Start by gathering all your ingredients. Wash and slice your vegetables, ensuring you have everything prepped before you begin. It saves time and keeps your cooking area tidy.
Preheat your oven to 400°F (200°C). Toss the halved grape tomatoes with olive oil, sea salt, and the Italian herb blend. Roast them for about 15-20 minutes until they’re soft and fragrant.
In a small bowl, mix together cultured buttermilk, Greek yogurt, salt, peppers, and your choice of herbs (basil, dill, cilantro, and mint). Whisk it well until creamy. This will serve as your flavorful dressing.
Take your pretzel roll or bread and start layering. Begin with a slice of provolone cheese, followed by the thick turkey slices. Add the crispy bacon for that crunchy, smoky element.
Dollop on some roasted tomatoes and caramelized onions. Next, layer in the fresh avocado slices. Drizzle with the herb sauce generously.
Close the sandwich with your top slice of bread. If desired, you can lightly toast the entire sandwich on a skillet to add a warm, golden crunch.