Brush one side of each slice of bread with olive oil.
To make balsamic vinaigrette, whisk together balsamic vinegar, garlic, salt, black pepper, olive oil and sea salt together in a medium bowl. Set aside.
To assemble sandwiches, please 8 pieces of bread brush-side-down on clean surface. Place on slice of cheese on each slice of bread. Then place 5 slices of apple on top, depending on size of bread. Drizzle 3 teaspoons of balsamic vinaigrette over apples. Then top with another slice of cheese and another slice of bread.
Press sandwich in panini press for 3-4 minutes until cheese is melted and bread is lightly toasted.
