Spread one tablespoon of pesto on 2 slices of bread. Spread the remaining two bread slices with Philadelphia cheese.

Sprinkle the mozzarella and parmesan cheeses evenly on each four bread slices.
Spread half and half of the baby spinach on the bread slices with pesto.

Top the cream cheese bread slices with sliced avocado. Finish with some fresh basil leaves, salt and pepper to your taste.
Press together one bread slice with pesto and spinach and one bread slice with cream cheese and avocado.

Heat one tablespoon olive oil in a frying pan over low-medium heat. Add the sandwich to the pan and cook until bread is crispy and golden brown. Carefully flip the sandwich over and cook the other side in a same way.