Blend peanut butter, sugar, shortening, and water with an electric hand-held mixer until smooth. Stir in Bisquick. Drop small teaspoonfuls onto lightly greased baking sheets. Press with a fork which has been dipped in a little dry Bisquick or flour. Bake for 8 to 10 minutes at 400°.
Makes about 4 to 5 dozen peanut butter cookies.