Hi Blue_Bird. You may want to google recipes specifically for the Stevia powdered sweetener. Sometimes different sugar substitutes have varying sweetening levels, so quantities needed may vary. Stevia can be quite sweet, especially if pure. Sometimes they mix it with other sugar subs, like sugar alcohols (i.e. erythritol) to make the quantities needed closer to the volume amount of regular sugar that would normally be needed. Also, sometimes granular works better than powdered types, and vice versa. Some sweets (particularly flour-based things or some custards) depend a little on the sweetener for textural or consistency reasons, while others don't.