Mushroom Barley Bake with Balsamic Mushrooms | BOSH!

Name: Mushroom Barley Bake with Balsamic Mushrooms | BOSH!
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: European, British
Ingredients: 1 large onion; 2 tbsp olive oil; salt; 6 cloves of garlic; 8 sprigs of thyme; 450g chestnut mushrooms; 1 tbsp balsamic vinegar; 1 tbsp soy sauce; 250g pearl barley; 1 vegetable stock cube; For the roasted mushrooms; 300g oyster mushrooms; 1 tbsp olive oil; plant-based cream; handful of fresh parsley