Mandarin Orange Cake III

INGREDIENTS

• 1 cup all-purpose flour
• 1 cup white sugar
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 egg
• 1 teaspoon vanilla extract
• 1 (15 ounce) can mandarin oranges, drained
• 1/2 cup chopped walnuts
• 3/4 cup brown sugar
• 3 tablespoons milk
• 3 tablespoons butter
• 1/2 cup flaked coconut