Depending on your oven, there could be a radiant heat factor that affects baking results when using a glass pan. Because it is made of glass, radiant heat passes through the dish, directly heating the surface of the food. This may be a reason why glass cookware manufacturers recommend preheating an oven before putting in the dish to cook.

So, if your oven cycles on frequently or for some other reason emits a lot of radiant heat, instead of just browning on top, your pound cake is essentially being toasted on all sides. That would explain why it took longer for the center to be cooked and also why it was so difficult to remove from the pan.

After getting a silicone loaf pan, I would never want to use glass bakeware again. However if you want to try again with your glass pan:

• Make sure the oven is fully preheated. You could even preheat it to a somewhat higher temperature, because the oven will lose a lot of heat when you open the door and put in the pan. Of course, if you do this, don't forget to immediately turn the oven setting down to the proper temperature!
• Instead of placing the glass dish directly on the oven rack, try putting it on a baking sheet or similar metal pan. That will shield the glass dish from some, if not most of the radiant heat.
• If you still have a problem, try reducing the baking temperature (or get a silicone pan!)

Depending on your oven, there could be a radiant heat factor that affects baking results when using a glass pan. Because it is made of glass, radiant heat passes through the dish, directly heating the surface of the food. This may be a reason why glass cookware manufacturers recommend preheating an oven before putting in the dish to cook.

So, if your oven cycles on frequently or for some other reason emits a lot of radiant heat, instead of just browning on top, your pound cake is essentially being toasted on all sides. That would explain why it took longer for the center to be cooked and also why it was so difficult to remove from the pan.

After getting a silicone loaf pan, I would never want to use glass bakeware again. However if you want to try again with your glass pan:

• Make sure the oven is fully preheated. You could even preheat it to a somewhat higher temperature, because the oven will lose a lot of heat when you open the door and put in the pan. Of course, if you do this, don't forget to immediately turn the oven setting down to the proper temperature!
• Instead of placing the glass dish directly on the oven rack, try putting it on a baking sheet or similar metal pan. That will shield the glass dish from some, if not most of the radiant heat.
• If you still have a problem, try reducing the baking temperature (or get a silicone pan!)