The research about the development of Whole Grain cookie product aims to study about the amount of oat power that can be used instead of wheat flour in Whole Grain cookie product in order to study about the nutrition of the cookie product from oat power and the acceptance of the customer about the Whole Grain cookie product by having 40 testers which are students in faculty of technology home economics Rajamangala University of Technology Phra Nakhon. There are 5- ponit hedonic scale questionnaire. The comparison of the average uses Duncan’s New Multiple Range Test (DMRT) The tasting result found that the amount of oat power that has been used instead of wheat flour 100 percent has the most acceptances. When study about the nutrition of the Whole Grain cookie products from oat powder found that it found that they provide 68.64 Kcal carbohydrate 5.20 grams protein 1.48 grams and fats 5.33 grams. Then study more about the acceptance of Whole Grain products from oat powder. It found that the customers were satisfied with Whole Grain product from oat powder at good level and the customers accept the products from oat powder about 97.5 percent.

The purpose of this study is to study 3 formula basic formula cereal bar and study the using crispy riceberry flake to replace rolled oats in cereal bar in 4 levels : 0% 50% 75% and 100%. The experiment is analyzed by Randomized Complete Block Design ( RCBD ) to evaluate the sensory quality in appearance color flavor taste texture and overall preference. The sensory evaluation is tested by 9 – Point Hedonic scale and evaluated by 40 subjects for study 3 formula basic and 80 subjects for study the using crispy riceberry flake to replace rolled oats. It is Analyzed by Analysis of Variance ( ANOVA ) and Least Significant Difference ( LSD ) and Duncan’s New Multiple Range Test ( DMRT ). The result of the study showed that the basic formula is the sensory evaluation is statistically significant ( P ≤ 0.05 ) of third formula. After the sensory evaluation of the appearance color flavor taste texture and overall basic formula which is mostly accepted. Scores are in the high level because the fact is chewy enough of it. As for the result of the study for using crispy riceberry flake to formula is replace the rolled oats in cereal bar it is sensory evaluation is statistically significant ( P ≤ 0.05 ) of 50% formula. After the sensory evaluation of the appearance color flavor taste texture and overall which is mostly accepted. Scores are in the high level and moderate because when to more replace in 75% and 100% while the solid of texture in cereal bar. So 50% formula is appropriate of study the using crispy riceberry flake to replace rolled oats in cereal bar.