Ratatouille with peppered steak

Ingredients (4 servings): 2 tablespoons olive oil 1 red onion, diced 2 garlic cloves, crushed ¼ teaspoon dried chilli flakes 1 large red capsicum (bell pepper), cut into 2cm pieces 1 large eggplant, cut into 2cm pieces 2 medium zucchini (baby marrow), cut into 2cm pieces 2 tablespoons balsamic vinegar 400g can chopped tomatoes 1…