Sift together the whole wheat flour, pastry flour, baking powder and salt, set aside.

In a medium bowl, stir together the vegetable oil, 2 cups of peanut butter, honey and yogurt until smooth.

Add the dry ingredients and mix by hand until well blended.

Shape into a roll that is 2 inches in diameter, wrap and chill until firm.

Preheat oven to 350 degrees F (175 degrees C).

Unwrap the roll of dough, and slice into 1/4 inch slices.

Place half of the cookies onto unprepared baking sheets.

Spread 1/2 teaspoon of peanut butter onto the center of each cookie on the sheets, cover with the remaining cookie rounds, and seal edges tightly with a fork.

Bake for 10 to 12 minutes in the preheated oven.

Remove cookies from baking sheets to cool on wire racks.