Susan, brown sugar is slightly acidic due to the molasses that's in it. Therefore, baking soda is the leavener for the job. However, if you find that you liked the results better with baking powder, then you're welcome to give that a try. (Usually 1.5-2x more baking powder than baking soda is needed to achieve the same rise.) Kye@KAF
March 19, 2018 at 11:40am
In reply to Ah PJ... **sigh** I just discovered this recipe last weekend or… by Susan (not verified)