The colours is this Ratatouille are magnificent. Mum will be thrilled to see so many vegies all in one salad. And she will be even more thrilled watching you eat them all 🙂
Instead of roasting the vegetables, you could grill them for 5 minutes each side, but keep an eye on them.
Toss eggplant, capsicum, onion, zucchini and cherry tomatoes in olive oil and arrange on a large baking tray together with the garlic cloves (you may need two trays). Sprinkle with salt and pepper. Cook until tender but not too soft (about 20 minutes). Remove from oven and allow to cool slightly on tray.
To make dressing, mix vinegar and olive oil in a jar, squeeze in the flesh from roasted garlic and shake until combined. Taste and adjust to your liking.
Scatter spinach leaves, roasted vegetables and olives on a large platter. Pour dressing over salad and toss gently. Sprinkle with crumbled cheese and basil leaves.