Chunky Eggplant Burgers - Vegan Recipe

Ingredients

• 30ml olive oil
• 2 brown onions, quartered
• 4 cloves garlic, crushed
• 6 Swiss brown mushrooms, halved
• 20g dried shiitake mushrooms, roughly chopped
• 300ml vegetable stock
• 1 eggplant, ends removed and cut into thick slices
• 3 slices oat melt cheese
• 1 tablespoon Dijon mustard
• 1 tablespoon tomato sauce
• 1 tablespoon diced red onion
• 3 brioche buns
• Pickles