Combine the ground turkey, cheese, egg, pesto, salt, and pepper. Mix well. Fold in the chopped tomato. Form into 14 large meatballs.
Heat a large skillet over medium high heat. Spray with cooking spray. Brown the meatballs on all sides.
Add the cauliflower and chicken broth. Cover. Simmer on medium for 6-8 minutes or until the meatballs are 160 degrees on a meat thermometer and the cauliflower is tender.