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Nancy is a trusted home cook.
Sugar gives not only sweetness but moisture to baked goods.
If you're making a regular recipe and (only) replacing the sugar with other sweetener, it may not be enough to get good results.
You may need to shorten baking times, or restore moisture other ways.
See Ali Slagle article here in 2016 about reducing sugar in baking for some tips.
And/ or the Trivia manufacturer for tips and recipes.
AutoIncorrect keeps saying "Trivia." I meant the sweetener you cited.