The present invention relates to an organoleptically improved dietary fiber composition comprising Trigonella foenum-graecum (fenugreek) seeds in the form of flakes with improved palatability, and method(s) of preparing the said composition. More particularly, invention relates to nutrient rich de-bitterised and de-fatted fenugreek dietary fiber and administering the same in a subject to bring satiety, feeling of fullness, appetite suppression, less desire to consume food, which may further lead to reduction or management of weight. The present invention can be used for the development of functional food, dietary plan and as a nutritional supplement. The present invention also relates to methods of managing various conditions such as, but not limited to, management of weight, appetite scores, glucose homeostasis, body mass index and serum insulin levels or any combinations thereof using the said composition.