If the middle of your brownies isn't cooking while the edges are burning, there are a few steps you can take to fix this issue. Here's what you can do:

1. Lower the oven temperature: One possible reason for the uneven cooking is that your oven temperature is too high. Lowering the temperature can help ensure that the middle of the brownies cooks properly without burning the edges [1].

2. Reduce the baking time: Another factor to consider is the baking time. If the edges are burning while the middle remains undercooked, it could be because the brownies are baking for too long. Try reducing the baking time to allow the middle to cook through without overcooking the edges [1].

3. Cover with aluminum foil: To prevent the edges from burning while the middle cooks, you can cover the brownies with aluminum foil. This will help distribute the heat more evenly and prevent excessive browning on the edges [1].

4. Put them back in the oven: If your brownies are undercooked in the middle, you can put them back in the oven at a lower temperature (around 350 degrees Fahrenheit) and continue baking them until they are cooked through. Use a toothpick to check for doneness – it should come out with only a few bits of brownie attached [3].

5. Microwave individual slices: If your brownies are cooked but still have a gooey middle, you can microwave individual slices in 30-second intervals. Microwaving helps cook the center of the brownie first, allowing the outside to stay moist [3].

Remember to let the brownies cool for about 30 minutes before cutting into them, as they will continue to cook and firm up during this time [3].

Learn more:

1. The middle of my brownies aren't cooking while the edges are ...
2. The Outside of My Brownies Are Cooked & the Middle Is Mushy | LEAFtv
3. How To Rescue Undercooked Brownies: 3 Quick & Easy Methods - Pantry & Larder