In vitro studies were carried out to determine the susceptibility of flours from steeped and heat dried cowpea to fungal growth and aflatoxins production. A 2 x 7 factorial experimental design with 2 levels of steeping time of cowpea grain in water (0 and 3 min steeping) and 7 levels of drying temperatures of the grains ranging from 35 to 120°C were used for flour production.