Just realized my oven thermometer was off by 25 degrees for 3 years
I kept burning the bottoms of my cookies and blaming my baking sheets. Last Saturday my neighbor brought over her thermometer to check my oven during a birthday cake bake, and it read 375 when I had it set to 350. I tested it three more times with cold water and ice, same result every time. That explains why my banana bread always came out dry on the edges and raw in the middle. I was about to drop $80 on new pans, but the real problem was my oven lying to me. Check your oven with a cheap thermometer before you buy anything else, it takes 10 minutes. What temp has your oven been reading vs what you set it to?