1-First Step: Prep the broccoli rabe Start by trimming 1 to 2 inches off the broccoli rabe stems. This helps remove the tougher ends so the greens cook more evenly and are easier to eat. Bring a pot of salted water to a boil, then cook the broccoli rabe for about 1 minute. It should soften slightly but still keep a bit of texture. Once the minute is up, move the broccoli rabe right into a bowl of ice water. This stops the cooking and keeps the color bright. Drain it well, then pat it dry so it does not splatter in the skillet later. If you want to reduce the bitterness even more, this blanching step really helps.

2-Second Step: Cook the garlic and greens Set a skillet over medium heat and add a generous splash of extra virgin olive oil. Once the oil is hot, add the sliced garlic and the optional red pepper flakes if you want a little heat. Cook until the garlic turns lightly browned and fragrant, but do not let it burn. Add the broccoli rabe to the skillet and toss it in the garlicky oil. Cook just until heated through, then season with salt and pepper to taste. Finish with the juice of 1/2 lemon for brightness. The greens should taste savory, slightly bitter, and fresh all at once.

3-Third Step: Marinate the chicken Place the thin-sliced boneless skinless chicken breasts in a bowl or shallow dish and coat them with the herb and garlic marinade. If you have time, let them sit for at least 4 hours. Overnight is even better if you want deeper flavor. This resting time matters because the marinade has a chance to soak into the chicken and help it stay juicy on the grill. If you are planning ahead for a busy week, this is a great make-ahead step. While the chicken marinates, you can prep the other sandwich parts or even make a side dish like parmesan crusted chicken for another meal later in the week.

4-Fourth Step: Grill the chicken Preheat your grill to medium heat. Once it is ready, place the chicken on the grates and grill for 3 to 5 minutes per side. Because the chicken is thin-sliced, it cooks quickly, so keep an eye on it. You are looking for chicken that is cooked through, lightly charred, and still juicy. If you are not sure whether it is done, check that the juices run clear and the center is no longer pink. Let the chicken rest for a few minutes after grilling. That rest time helps the juices settle so the meat stays tender when you slice or layer it into the sandwich.

5-Fifth Step: Toast the rolls While the chicken rests, place the wheat sub rolls on the grill for 1 to 2 minutes. You just want a little toast and some grill marks, not a hard crust. Toasting adds crunch and helps the rolls stand up to all the fillings. If you are serving a crowd, this is a nice time to lay out your toppings so everyone can build their own sandwich. Toasted rolls also help prevent the bread from getting soggy once the balsamic vinegar and juicy vegetables go in.

6-Final Step: Assemble and serve To build each sandwich, layer the broccoli rabe first, then add the grilled chicken, prosciutto slices, roasted red peppers, and fresh mozzarella. Finish with a light drizzle of balsamic vinegar if you like that sweet-tangy touch. Close the sandwich and serve it warm. For a full meal, pair it with a simple salad, chips, or roasted vegetables. If you like Italian-style meals, you may also want to try Tuscan baked spaghetti next time you are feeding family or friends.