Did you try it on an insulated cookie sheet? That could help the burning...
Awesome! I want a cookie now.
One of those non-stick silicone baking mats (silpat) might provide enough insulation to keep the bottoms from over-browning.
Maybe align the cookies along one edge of the sheet and only fire the opposite burner as well to reduce the amount of radiant heat.
try preheating the cookie sheet
1. Make cookie dough
2. Freeze in cookie-size chunks
(OR buy premade, your choice)
3. When you desire a cookie, bake a few in the toaster oven shown directly behind the bag of cookie dough in the first picture.
The problem was a pan bottom too hot. You want to look for insulation, someway to keep the bottom cooler while the radiant heat has time to cook the tops.
Some things I immediately thought of
- Put cookies on a silicon baking mat
- Make a cookie tray sandwich of two or three pans stacked, maybe with a silicon pad in between. Anything to keep the heat away from the cookie bottom until the end.
- Insulated Cookie pan.
If you have four burners, try keeping the middle ones on low to off, with the side burners on the medium to high setting. This results in indirect heat that is more even.
We were bored at home last week and decided to try cooking a whole turkey on our grill and it was about 90% successful, kind of like those cookies.