The current study is a cluster randomized single blind intervention design study with three study arms that aimed to examine the effect of providing a macro- and micro-nutrient fortified complementary food supplement (KokoPlus) for a period of 12 months (starting at 6 months of age) on growth and nutritional status of Ghanaian infants at 18 months of age. KokoPlus was formulated using linear programming methodology based on formative and market analysis research findings.