Preheat over to 375. Combine flour, baking soda, cinnamon & salt in a small bowl. Beat butter, sugars, eggs and vanilla in a large bowl. Gratdually beat in flour mixture. Stir in oats & morsels. Grease 15 x 10 inch jelly-roll pan. Spread dough into prepared pan. Bake for 18 - 22 min. or until light brown. Cool completely in pan on a wire rack. Cut into bars.