Should I use only the bottom element for heating when baking cakes and brownies??
Yes, I would suggest you only use the bottom element when baking the actual cake. Using both elements is generally used for pre-heating the oven, or to brown the top of a dish. Maybe use the top element to bring the oven up to temperature, then turn it off when you put the cake/brownies in the oven.
It depends on your oven and how bad the result is.
I suggest making different tries:
- use only the bottom element
- use both element and cover your cake with foil when you have the desired color on top to prevent over-cooking
- use a pizza stone to keep an even temperature in your oven
I had the same problem and tried all those solutions. They all have pros and cons and depends on the result you want to achieve.