A crystallized sugar product containing a heat-sensitive, acidic, or high invert sugar substance is prepared by admixing the heat-sensitive, acidic, or high invert sugar substance with a dry sugar base to form a premix, concentrating a sugar syrup containing at least about 85% by weight sucrose to a solids content of about 95% to about 98% by heating to a temperature of about 255°F. to about 300°F., mixing the premix with the concentrated sugar syrup to form a mixture, subjecting the mixture to impact beating within a crystallization zone until a dry crystallized sugar product is formed, and recovering the sugar product from the crystallization zone. The resulting sugar product comprises aggregates of fondant-size sucrose crystals intimately associated with the heat-sensitive, acidic, or high invert sugar substance. The sugar product is dry, granular, free-flowing, non-caking, and readily dispersible in water.