In med. bowl, combine baking mix, cinnamon, sweetener and salt.

Whisk in egg, milk and butter.

Transfer mixture to large mug or 10 oz ramekin.

Place berries carefully in cup on top of batter. This will help keep them from sinking to the bottom of the muffin when cooking.

Microwave on high power 2 min. or until toothpick inserted comes out clean. If using fresh berries, microwave 1-1/2min. Allow to cool 5 min.