2In a large bowl, beat the butter, sugar and shortening until fluffy
3Add the peanut butter and mix again
4Add the corn masa in portions while mixing
5Add in the baking powder and mix until fluffy
6After everything is thoroughly combined, check to see if the dough is ready by taking a teaspoon of dough and dropping it into a small container with water, if it floats to the top, the dough is ready
7Remove the corn husks from the bowl of water and drain
8Spread the dough onto the corn husk, about ½ inch in thickness
9Fold the sides of the husks in towards the center and place in a steamer
10Steam the tamales for 45 mins or until fully cooked