Scotch Beef Ratatouille

450 g lean Scotch Beef PGI braising steak, cut into chunky cubes

1 tbsp olive oil

1 onion, peeled and cut into chunks

2 cloves garlic, crushed

397 g (approx) can chopped tomatoes

1 tsp dried mixed herbs

150 ml stock

1 red pepper, deseeded and cut into large chunks

1 green pepper, deseeded and cut into large chunks

1 courgette, cut into large chunks

1 small aubergine, cut into large chunks

Black pepper