This grilled chicken sandwich is piled high with juicy, caramelized grilled chicken on a bun with lettuce, tomato, and a creamy-tangy sandwich sauce that’s seriously the best out there!
¼cupsweet onionfinely chopped (plus more for topping if desired)
1tablespoonItalian parsleyfinely chopped
½teaspoonfresh lemon juice
¼teaspoonground mustard
Salt and pepperto taste
Instructions
Make the sandwich sauce by mixing together mayo, relish, onion, parsley, lemon juice, ground mustard, and salt and pepper. Set aside.
Preheat grill to 450℉. While preheating, marinate chicken in balsamic vinegar for 5 minutes. Grill for 6-8 minutes per side, or until the internal temperature of the chicken reaches 165 degrees.
Sprinkle grilled chicken with salt and pepper, and let rest for 5 minutes. Meanwhile, toast buns.
Slice the chicken breasts against the grain into roughly ½-inch thick slices. Hold your knife at a slight angle, about 45 degrees, as you cut. This creates wider, flatter slices that will lay nicely on a bun.
Fill the bottom buns with a layer of chicken slices.
Then add tomato slices, then lettuce, and any extra chopped onion.
On the top bun, spread about 2 tablespoons of sauce per bun (or desired amount).
Put your sandwiches together, and enjoy!
Video
Notes
If you like a lot of sauce, double the sauce recipe. The above quantities make roughly 2 tablespoons of sauce per sandwich.
Other optional toppings: bacon or cheese like cheddar, provolone, Swiss, or pepperjack.
You can grill buns if preferred, for about a minute.
Depending on the size of your buns, you may have a little extra chicken.
You can make the sauce up to 3 days ahead! You can also make the chicken ahead, reheating in a 350 degree oven until just warm, wrapped in foil.