Grilled Chicken Club Sandwich

Cook bacon in a skillet until crisp, then set aside.

Grill or pan-sear chicken breast until cooked through and golden.

Toast the bread slices until golden brown and lightly butter them.

Spread mayonnaise (and avocado if using) on one side of each slice.

Layer lettuce, tomato, salt, pepper, and grilled chicken on the first slice.

Add a middle slice of toast, spread with mayo, then layer bacon and more tomato.

Top with the final slice of toast, mayo side down.

Press gently, cut into quarters, and secure each with a toothpick.