Heat oven to 375°F. In large bowl, combine brown sugar and margarine; beat until light and fluffy. Add milk, 1 tablespoon lemon juice, lemon peel and egg; blend well. Add all purpose flour, whole wheat flour, baking soda, cinnamon and salt; mix well. Stir in apples and granola. Drop dough by heaping teaspoonfuls 2 inches apart onto ungreased cookie sheets.
Bake at 375°F. for 9 to 13 minutes or until light golden brown. Immediately remove from cookie sheets. Cool 15 minutes or until completely cooled.
Meanwhile, in small bowl, combine glaze ingredients, adding enough lemon juice for desired drizzling consistency. Drizzle over cooled cookies.