Preheat oven to 400 degrees. Place bagels cut side up on a large baking sheet and lightly spray with cooking spray. Bake bagels in oven for 5 minutes, or until lightly toasted.
Spread the mustard over each bagel and then top with the sliced turkey, apple slices and cheese slices. Return to oven for 5 to 7 minutes, or until the cheese is melted. Top with the micro-greens and serve immediately. Enjoy!