PROBLEM TO BE SOLVED: To provide a powder composition for microwave oven cooking of food material such as meat, fish, and soybean curd, etc., which is sprayed on the surface of the food material so as to impart deliciously browned burnt deposits on the surface of the food material just by microwave heating, having excellent storage stability.SOLUTION: The composition for microwave oven cooking includes 20 to 70 wt% of powder soy sauce and granule soy sauce having a particle diameter of 0.25 to 1.18 mm blended with pregelatinized rice flour as filler, and 30 to 80 wt% of saccharides.