Tuna Sandwich

Okay, I remembered to post a healthy recipe for today, here it is, a healthier version of the tuna sandwich:

3oz tuna (packed in water)
1 tsp. olive oil
1 tsp capers (we don't use these)
1 Tbsp. chopped red onion
1 boiled, chopped egg white
2 slices whole grain bread
Lettuce (optional)
1 tsp. mustard

Drain tuna. combine with oil, capers and egg. Spread mustard, or combine with other ingredients. Spoon mixture on bread, add lettuce.