GRANOLA BARS 2 CUPS OLD FASHIONED OATS 3 CUP MINI MARSHMALLOWS 1/2 CUP PEANUT BUTTER 3 T BUTTER OR MARGARINE 1 CUP RAISINS 1/2 CUP CHOCOLATE CHIPS BAKE OATS ON AN UNGREASED COOKIE SHEET AT 350 DEGREES; BAKE FOR 15 MINUTES; STIR OFTEN. COOL. PLACE REMAINING INGREDIENTS EXCEPT CHOCOLATE CHIPS AND RAISINS IN A SAUCEPAN; COOK OVER LOW HEAT, STIRRING CONSTANTLY UNTIL MELTED. REMOVE FROM HEAT. QUICKLY STIR IN OATS, RAISINS, THEN CHOCOLATE CHIPS. SPREAD INTO BAKING PAN. CHILL UNTIL SET. CUT INTO BARS.