
Begin by combining the mayonnaise, yogurt, lemon juice, celery salt and lemon pepper and mix well. Set aside.
Combine the tuna, red onion and celery and mix well. Add the dressing to the tuna and mix until fully combined. Finish by adding the red grapes.
For serving, I toasted a gluten free English muffin and topped with lettuce and then the grape tuna salad.