Heat oven to 400°F. Grease bottom only of 8-inch square pan with shortening or cooking spray. In medium bowl, stir together Muffin Mix, apple, carrot, walnuts and coconut. In small bowl, stir together oil, eggs and pineapple; stir into muffin mixture. Spread in pan. Sprinkle with Streusel (from Muffin Mix).