Preheat oven to 350°.
Using a hand mixer, combine the softened butter and brown sugar until completely combined and smooth.
Add the egg and vanilla into the bowl, and mix thoroughly.
Add the baking powder and whole wheat flour to the bowl and mix until combined, the dough should be in little crumbles, not in one big ball.
Take half of the dough crumbles and arrange them on half of a cookie sheet. If your dough has comepletley come together, take half of the dough and crumble it into small peices onto one side of a cookie sheet.
Flour your counter, take the remaining dough and roll it out like you would sugar cookies. Roll it out until it is 1/4- 1/2 inch thick. Cut off the rough edges, cut into 9 squares. (cut in thirds vertically, then in thirds horizontally.)
Use a Fork to poke holes in the cookies so they don't puff up while baking.
Transfter the square cookies onto the other half of the cookie sheet.
Bake at 350° for 15-20 mintues, we want to dry the cookies and cookie crumbs out completley so they become like a cracker, mine take closer to 20 mintues, just watch them so they don't burn.
Take them out of the oven and allow them to cool completley.