-
Toast the Bread: While the chicken is resting, lightly toast the bread slices on the grill or in a toaster.
-
Spread the Pesto: Generously spread the homemade pesto on one side of each slice of bread.
-
Add Chicken and Toppings: Slice the grilled chicken breasts and place them on the pesto-covered side of two slices of bread. Top with spinach or arugula, tomato slices, and cheese if using.
-
Finish the Sandwich: Top with the remaining slices of bread, pesto side down. Serve immediately.