I finally bought a $12 oven thermometer after 3 years of burnt bottoms
My oven runs 40 degrees hot and I never knew it, so every batch of cookies came out dark on the bottom no matter what I did. Stick one of those cheap thermometers in there before you blame your recipe, has anyone else found their oven was way off from what the dial says?
41 degrees off on my last apartment oven, and the landlord acted like I was making it up. A five dollar thermometer saved me years of fighting recipes that were never the problem. Test your oven before you waste another batch.