Proximate composition of the ingredients: The chemical composition of the ingredients is shown in Table 1. Wheat had close to 10% less starch compared to rice and corn. The protein content of wheat semolina was about 40% greater than that of rice and corn. The fat content for rice flour was about 6% of that of corn grits or wheat semolina. Ash in rice flour was 50% less than corn or wheat. Dietary fibre of the ingredients increased to up to 17% with tomato skin addition. A small amount of other carotenoids were extracted from corn grits but was considered insignificant compared to that coming from tomato derivatives (Table 1). Lycopene concentration of raw ingredients containing tomato paste powder was more than 30- fold higher than raw ingredients containing tomato skin. Extrusion conditions: Die temperature, thrust pressure, energy consumption, torque and SME are shown in Table 2. The variations in the extruder parameters were mostly due to the differences in the chemical composition i.e. fat, fibre and sugar content, of the ingredients (Camire, 1998; Riaz, 2006). For example, incorporation of tomato derivative reduced the energy consumption, torque and SME values significantly (Table 2), due to the lubricating effect of sugar and fibre coming from the tomato paste and skin. Also, rice flour contained the lowest amount of fat so frictional torque was higher in products containing rice flour (Table 2).