Place steak on a large plate. Rub both sides with combined spice mix and oil. Heat a large non-stick frying pan over a medium-high heat. Add steak and cook for about 4 minutes on each side, or until cooked to your liking. Transfer to a clean plate. Rest 15 minutes.
Meanwhile, heat rice and quinoa blend in microwave as directed on packet. Transfer to a bowl. Cool.
Rinse corn cobs under cold water. Cut kernels from cob.
Place broccoli in a heatproof bowl. Cover with boiling water. Stand 2 minutes. Drain and refresh under cold water. Drain again.
To make dressing, whisk all ingredients in a medium jug with a fork to combine.
To serve, slice steak thinly. Arrange rice and quinoa, steak, corn, broccoli, cabbage and carrot in separate sections between 4 shallow serving bowls. Top each serving with an avocado half. Drizzle with dressing and sprinkle with pecans.