Deceptively Delicious Hamburger!

Puree different veggies (onions,bell peppers, jalepenos, etc). Use lean beef and mix the puree with the beef while making a game on friendly sized hamburger. Grill it on the grill. Put it on a 100 calorie 100% whole wheat sandwich round. Top with lettuce, onions, and a thumb size amount of avocados. Maybe I will try this tonight!