In greased 9 x 2-inch microwave safe dish (preferably glass), combine coconut, pecans, chocolate pieces, 1/4 cup brown sugar and butter. Mix well.

In bowl, combine baking mix, remaining 1/4 cup brown sugar, egg, milk and oil, mixing until smooth. Pour over coconut mixture in dish. Microwave on HIGH for 4 to 5 minutes, turning dish 1/4 turn after 2 minutes. Cool on counter 5 minutes.

Invert onto serving plate. If cake does not release from baking dish, return to oven on serving plate, covered by baking dish and microwave 1 minute.