1/2 CUP BUTTER 1/2 CUP PEANUT BUTTER 1/2 CUP WHITE SUGAR 1/2 CUP BROWN SUGAR 1 EGG 1 + 1/4 CUP FLOUR 1/2 teaspoon BAKING POWDER 1/4 teaspoon SALT 3/4 teaspoon BAKING SODA 1/2 CUP PEANUT BUTTER CHIPS 375 DEGREES FOR 10 MINUTES UNTIL GOLDEN BROWN