Serrano ham and pisto (Spanish ratatouille) sandwich recipe on Gourmetpedia

Ingredients

• - 500 g / 1 pound Spanish tomatoes
• 1/2 small green pepper
• 1/2 small red pepper
• 1/2 small zucchini
• 1 small eggplant
• 100 ml Spanish extra virgin olive oil
• 1/2 big onion
• 2-3 garlic cloves
• a sprig of thyme
• salt
• black pepper
• 4 bread buns
• 125 g / 4 oz Serrano ham