1. Place margarine in 6-cup ring dish. Microwave uncovered on high about 45 seconds or until melted. Sprinkle brown sugar and pecans evenly over margarine. Microwave uncovered 45 seconds to 1 minute or until hot and bubbly.
2. Mix baking mix, milk and cinnamon until soft dough forms; beat vigorously 30 seconds. Drop dough by 6 spoonsfuls into hot mixture in dish.
3. Microwave uncovered 2 to 4 minutes, rotating dish 1/2 turn after 1 minute, until top appears dry and springs back when touched lightly.
4. Immediately invert onto heatproof serving plate; leave dish over coffee cake 1 minute.