In a small saucepan combine all the ingredients for the sauce. Bring to a boil over medium high heat then reduce to a simmer. Simmer for 15 minutes, stirring occasionally, or until thickened. Remove from heat.
Meanwhile heat 1 teaspoon sesame oil in a large skillet over medium heat. Add broccoli and saute for 2 minutes. Add in the water and cook for 3-4 minutes or until bright green.
Add the zucchini, pineapple, red peppers, and soy sauce to the pan. Saute for 5 minutes, stirring occasionally. Remove the vegetables from the pan and keep warm.
Add the remaining sesame oil to the pan. Add the tofu and cook for 8-10 minutes or until browned. Pour the BBQ sauce over top of the tofu and toss to coat.
To prepare the tofu bowls place 1/2 cup of the quinoa in each of 4 bowls. Divide the vegetables between the bowls. Place 1/4 c. red cabbage in each bowl. Divide the tofu between the bowls. Sprinkle with green onions and sesame seeds.