Step 1 Combine all marinade ingredients in a shallow dish. Cut tofu into cubes and add to marinade. Cover and leave for 20-30 minutes. Cut capsicum and courgettes into chunks.

Step 2 Now make the sauce! Heat oil in a saucepan, add garlic and onion and cook over moderate heat until onion is transparent. Add remaining sauce ingredients and mix well, bring to the boil. Turn down the heat and simmer until sauce thickens. Put aside and keep warm.

Step 3 Heat a pan or barbecue grill until hot. Spray with oil and stir-fry tofu and vegetables for 4-5 minutes or until tofu is golden brown. Serve with rice or a green salad drizzled with satay sauce.