Heat oven to 375°F. Grease cookie sheets. In large bowl, combine butter and cream cheese; beat until smooth. Add sweetened condensed milk and egg; blend well.
Lightly spoon flour into measuring cup; level off. Add flour and brownie mix; mix well. (Reserve enclosed chocolate-flavored syrup packet for topping.) Stir in pecans, coconut and chocolate chips. Drop dough by heaping tablespoonfuls 1 inch apart onto greased cookie sheets.
Bake at 375°F. for 9 to 12 minutes or until set. Cool 1 minute; remove from cookie sheets. Cool completely.
Cut very small hole in corner of reserved chocolate-flavored syrup packet; lightly drizzle over cooled cookies. Store in tightly covered container.