Creating Tuna Salad Toast is simple and straightforward. Follow these easy steps to prepare this amazing dish:

1. Prepare the Tuna Salad: In a medium bowl, combine the drained tuna, mayonnaise, Dijon mustard, salt, and pepper. Mix well.
2. Add Crunch: If desired, fold in chopped celery and red onion for added texture and flavor.
3. Toast the Bread: Toast the slices of bread until they are golden brown and crispy.
4. Assemble the Toast: Place a lettuce leaf or a handful of baby spinach on each slice of toast.
5. Top with Tuna Salad: Spoon the prepared tuna salad generously over the greens on the toast.
6. Garnish: Optionally, garnish with halved cherry tomatoes for a pop of color and flavor.
7. Serve Immediately: Enjoy your Tuna Salad Toast while the bread is still warm and crispy.

With these straightforward steps, preparing Tuna Salad Toast becomes an effortless task that anyone can master!