Creating the Chicken Avocado Melt Sandwich is simple if you follow these crucial steps:

1. Prepare the Avocado: Cut the avocado in half, remove the pit, and scoop out the flesh into a bowl. Mash it slightly with a fork.
2. Add Flavor: Stir in the lime juice, salt, and pepper to the mashed avocado. Mix well until combined.
3. Prepare the Chicken: If not already done, shred or slice the cooked chicken breast. Consider mixing it with mayonnaise for added creaminess.
4. Assemble the Sandwich: On one slice of bread, spread a generous layer of the avocado mixture. Top it with shredded chicken and a sprinkle of cheese.
5. Top It Off: Place the second slice of bread on top to form the sandwich.
6. Heat the Pan: Preheat a skillet or griddle over medium heat. Lightly coat it with cooking spray or butter.
7. Grill the Sandwich: Place the sandwich on the pan and grill for about 3-5 minutes per side, or until the bread is golden brown and the cheese has melted.
8. Serve: Once cooked, remove the sandwich from the pan and let it cool for a moment. Slice it in half if desired. Garnish with fresh cilantro or parsley.

These detailed steps will guide you in making an incredible Chicken Avocado Melt Sandwich that everyone will love.