Roasted Vegetable and Goat Cheese Sandwich

Ingredients

• 1 medium eggplant, cut into 1cm slices
• Salt
• 2 tbsp butter
• 2 large onions, thinly sliced
• 3 to 4 large mushrooms, stems removed
• ¼ cup olive oil
• 1 medium zucchini, cut into ½cm slices
• 175g goat cheese, crumbled
• 2 red capsicum, roasted
• 6 crusty bread rolls