Reese's Chewy Chocolate Pan Cookies

Yield:	48 Bars
Categories:	Biscuits, Chocolate

1 1/4	c	Butter or margarine, softened (2 1/2 sticks)
2	c	Sugar
2		Eggs
2	ts	Vanilla extract
2	c	All-purpose flour
3/4	c	HERSHEY'S cocoa
1	ts	Baking soda
1/2	ts	Salt
1 2/3	c	REESE'S peanut butter chips