In a medium saucepan heat up enough olive oil to cover the bottom. Add the butter and lemon juice. Add the tomatoes, peppers, onion and asparagus and sauté for 3-4 minutes. Add the olives, basil and parsley (as much or as little as you like), sprinkle with salt and pepper and sauté for 1 more minute. Remove from stove. Add the orzo and mix it well.