Healthy sesame tofu and vegetable stir fry recipe

Name: Healthy sesame tofu and vegetable stir fry recipe
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: Asian, Chinese
Ingredients: 2 tsp tahini; 1 quantity Healthy Stir-fry Sauce (see recipe notes); 2 tbsp gluten-free cornflour; 1 tbsp sesame seeds, plus extra, to serve; 300g firm tofu, drained, cut into 2cm cubes; 1 1/2 tbsp macadamia oil; 1 red onion, cut into thin wedges; 250g green beans, halved diagonally; 1 large red capsicum, deseeded, thinly sliced; 1 large yellow capsicum, deseeded, thinly sliced; 1 tbsp finely grated fresh ginger; 1 large bunch baby buk choy, cut into 6cm lengths; 2 cups steamed brown rice, to serve; Fresh coriander sprigs, to serve