1. Chill dough 30 to 60 minutes for thicker cookies and less spread 2. Use old fashioned oats not quick oats for the most consistent chewy texture 3. For extra molasses flavor use dark brown sugar 4. If cookies spread too much add 1 to 2 tbsp flour next batch 5. Store airtight up to 4 days or freeze baked cookies up to 2 months