Add one egg and some spinach to a small, microwaveable, single serve dish. Cook in microwave for 1 1/2 minutes, then set aside. Repeat with remaining eggs.

Toast bagels; slice tomato and avocado.

Add the spinach and egg to the bottom half of each bagel; then, add a few slices of tomato and avocado.

Spread cheese onto top half of each bagel and close to make sandwiches.

Serve sandwiches with apple slices on the side.