This recipe was actually the result of a happy accident. I wanted to make my favorite standard chicken salad — mayo, celery, walnuts — but when I got home after a long day I realized I was out of mayo... and walnuts. And I really, really didn't want to go back out to the store (you know what that's like). So I improvised with what I did have on-hand: balsamic vinegar and arugula. The result? A Delicious, simple, and oh-so easy sandwich.
To make this recipe even easier, I used store-bought roasted chicken. You can also use leftover cooked chicken.
Add the chicken pieces to a small mixing bowl. Add the vinegar, lemon juice, salt, and pepper and mix to full incorporate all of the ingredients, seasoning to taste.
Meanwhile, toast 4 pieces of multi-grain bread. When the bread is ready, add about 1/2 to 3/4 of a cup of chicken salad to each sandwich. Top both sandwiches with about a 1/2 cup of arugula.