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The original was posted on /r/tifu by /u/Brenden8r on 2025-11-28 14:07:06+00:00.
So yesterday for thanksgiving, I offered to bring a dessert in addition to arriving early to help with the cooking. I settled on making blondies since 3/4 other desserts that were being made were chocolate based and my wife can’t have too much chocolate. I make the blondies at home, take them out of the oven and eat one to test if they needed more time, then baked for another 5 minutes to finish them off. As soon as those 5 minutes were done, I took the container out and let it cool for a few minutes, then covered the ceramic cooking container with foil and put it in an insulated bag. We immediately drove down to my parents’ house 45 minutes away, and when we got there I took the blondies out of the insulated container.
Clue 1 that something had gone wrong: The whole drive down there, the car smelled amazing. We remarked several times that the blondies smelled like they were fresh out of the oven, and the scent seemed to get stronger as we drove.
Clue 2 that something had gone wrong: When I opened the container, I couldn’t pull the blondies out, the baking dish had very slightly melted the insulated container material and imprinted the baking dish logo into the container. I figured that it had been just a bit too hot and that I needed to cook it off more next time.
After peeling the baking dish out, I let it sit on the counter until dessert time. When that time came, I went to get the first Blondie.
Clue 3 that something had gone wrong: I had pre-cut 8 blondies in the baking dish so I tried to pull one out with a fork and was having a really hard time getting it out. I attributed this to the fact that I used cooking spray instead of butter to grease the dish.
When I went to cut off the first piece of my Blondie, the knife couldn’t put a scratch on it and made an awful grinding noise as I tried. The whole table collectively hushed to look at my rock solid Blondie as I tried to saw through it. I reasoned that the issue was because it was a corner piece and I was trying to cut one of the edges, so I went back and got a piece with fewer edges and tried to bite into it directly, and while I was able to bite through it, it was the densest, hardest, driest baked good I’ve ever eaten.
I immediately took them off the table and hid them away in an area where nobody would try to take any, then tried to work out what had happened. Eventually I figured it out.
By placing my blondies almost directly from the oven into my insulated container, combined with the fact that my baking dish is a ceramic that retains heat well, I baked the blondies for an extra 45 minutes over their 30 minute baking time.
Now I have a permanent reminder melted into my insulated container.
TL;DR: Turned my blondies into rocks on accident and permanently damaged my insulated container.