Turn on Oven to 375°F (190°C)                                                   

Grease and lightly flour two 8 x 1½ -inch round or two 8 x 8 x 1¾ inch square baking pan. Alternately line the baking pan with baking paper. In a medium mixing bowl, combine rice bran, all-purpose flour, baking powder and salt, set dry mixture aside.       

In a large mixing bowl, beat butter with an electric mixer on medium to high speed for 30 seconds. Add sugar and vanilla, beat wet mixture till well combined. Add egg and beat for 1 minute. Add dry mixture and milk alternately to wet mixture, beating on low speed after each addition just till combined. Pour batter into prepared baking pan.              

Bake in a 375°F oven for 30 to 35 minutes or till a wooden toothpick inserted in the center comes out clean. Cool cake in baking pan on a wire rack for 10 minutes. Remove cake from baking pan and cool thoroughly on wire rack for at least 50 minutes.