Preheat oven to 375° F. Combine flour, baking soda, salt, pumpkin pie spice, and cinnamon in small bowl. Beat butter, granulated sugar, brown sugar, eggs, pumpkin and vanilla extract in large mixer bowl until light and fluffy. Gradually beat in flour mixture. Stir in oats and morsels. Batter will be wet. For thicker cookies, chill cookie dough in the fridge for about 30-60 minutes.
