Cook the rice according to the instructions on the packet. Meanwhile, heat the oil in a large wok or frying pan and add the chilli and garlic. Stir-fry for 2 minutes, then add the beef and carrots. Toss together and stir-fry for a further 2 minutes before adding in the stir-fry sauce. Let simmer for 2-3 minutes, tossing occasionally, then stir in half the spring onions.
To serve, fluff up the grains of rice with a fork and stir through the spinach, coriander and the remaining spring onions. Divide among four plates and top with the beef stir-fry.