Seared Tuna Steaks on Roast Vegetable Couscous and Maple Sauce

Ingredients

• 1 large red capsicum, quartered, deseeded
• 1kg butternut pumpkin, peeled
• 1 large red onion, peeled, root intact
• 6 yellow patty pan squash, quartered
• 3 Roma tomatoes, quartered lengthways
• 2 tablespoons olive oil
• 1 cup vegetable stock
• 1 cup couscous
• 1 lemon, rind finely grated, juiced
• 1 tablespoon extra-virgin olive oil
• 400g can chickpeas, drained, rinsed
• 1/2 cup flat-leaf parsley leaves, chopped
• Tin of crushed tomatoes
• ¼ cup maple syrup
• Clove of garlic
• Teaspoon of mustard