Chop or dice one medium size onion, one medium size capsicum, one medium size tomato, half cup button mushrooms, six garlic pods.
Place the veggies in a grill tray and add one tbsp soy sauce, one tsp black pepper powder. Mix well to place inside the convection.
Set the temperature for 170 degrees, grill for 10 minutes. Let it cool down and your grilled veggies are ready to eat.