Preheat your panini grill or a grill pan over medium heat.
Combine the mayonnaise, basil, minced garlic, sea salt, to taste, dash of white pepper, and dash of cayenne pepper, together in a small bowl. Mix until well combined. Set aside.
Spread some of the basil mayonnaise on both slices of bread then layer it with a little cheese, turkey, tomato, avocado, and a little more cheese. Place the other slice of bread on top.
Place into your panini pan (or grill pan). Cook for 5 minutes or until crispy and golden brown. Serve immediately. Enjoy!
Side Note: I always cook my paninis dry. I find that using oil or butter on the bread makes the sandwich too greasy. Try it – I bet you will like it and it’s way better for you!