Slice avocados in half, lengthwise and remove pits. Scoop out about half of the flesh from each half.
Dice the carved out flesh and place in a bowl with tuna, mayonnaise, bell pepper, celery and lemon juice. Mix to combine. Add salt and pepper as needed.
Stuff tuna into avocado halves. Sprinkle with cilantro. Refrigerate for a few hours or serve immediately.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.