Combine biscuit crumbs and butter in medium bowl. Spread evenly over bottom of 20x30cm baking pan; press in firmly. Sprinkle with coconut; pour condensed milk evenly over coconut.
Bake in preheated 180 degrees C oven for 20-25 minutes or until lightly browned; cool for 15 minutes.
Spread raspberry jam over coconut layer; chill for 3-4 hours or until firm. Sprinkle with nuts. Melt chocolate chips over low heat and drizzle over bars. Melt white chocolate squares and drizzle over bars. Chill. Cut into bars.