In a large bowl, mix together the first five ingredients, plus the wheat germ if desired, and set aside.
In a medium microwaveable bowl, combine the peanut butter, brown sugar and corn syrup; microwave on high for two minutes. Add vanilla and stir until blended.
Pour the peanut butter mixture over the dry ingredients and stir until coated.
For squares, pour the mixture into an 8 x 8-inch pan coated with cooking spray; for bars, spoon it into a 9 x 13-inch oblong pan. Press down firmly. (It helps to coat your fingers with margarine, oil or cooking spray.).
Let stand for about an hour to harden, then cut into squares or bars.