No complaints here

I have two boys who are good eaters. I bought the Deceptively Delicious cookbook in preparation for hiding veggies, but the boys eat broccoli, spinach, carrots, tomatoes, and tons of fruit. However, I would like to branch out even farther into, say...tofu, or hummus, or papaya and kiwi. Big O won't eat mango. How can you not like mango?! It's like candy. From what I can understand, it's not the taste he objects to, it's the texture. He's always been a texture-picky eater. He doesn't like mashed potatoes (I know, weird) because of the texture. Any ideas to incorporate tofu?