Ingredients
- 1 1⁄3 cup low-sodium vegetable stock
- 1 cup coarse polenta
- 1⁄2 cup finely grated Parmesan cheese
- 1 Tbsp olive oil
- 1 large onion, chopped
- 2 garlic cloves, crushed
- 2 eggplants
- 1 large red bell pepper, diced
- 2 zucchini, thickly sliced
- 5 1⁄2 oz button mushrooms, cut into quarters
- 1 (14 oz) can low-sodium diced tomatoes
- 3 tsp balsamic vinegar
- Olive oil, for brushing