Greek veggie bake

Ingredients (4 servings): 160ml (1/3 cup) extra virgin olive oil 1 (about 380g) eggplant, halved lengthways, thickly sliced 1 brown onion, cut into wedges 1 red capsicum, deseeded, thickly sliced 3 garlic cloves, sliced 4 zucchini (baby marrow), trimmed, sliced 160ml (1/3 cup) water 1 tablespoon dried oregano leaves 250g baby roma truss tomatoes 200g…