Why my cookies browning on top?

There are a few reasons why your cookies might be browning too much on top:

1. Oven Temperature:

* Too Hot: The most common culprit! If your oven is running too hot, your cookies will brown quickly. Calibrate your oven with an oven thermometer to ensure it's accurate.

* Uneven Heat Distribution: Some ovens have hot spots. Rotate your baking sheet halfway through baking to ensure even browning.

2. Baking Time:

* Overbaking: Overbaking is another common cause of excessive browning. Keep a close eye on your cookies and start checking for doneness a few minutes before the recipe's recommended time.

3. Ingredients:

* Too Much Sugar: Sugar caramelizes easily, so using too much can lead to overly brown cookies. Stick to the recipe amounts.

* Dark Brown Sugar: Dark brown sugar contains more molasses, which can contribute to browning. Use light brown sugar if you want to avoid excessive browning.

* Baking Soda or Powder: These leavening agents can cause browning if used in excess or if they're old.

4. Baking Sheet:

* Dark or Un-greased Sheet: Darker baking sheets absorb more heat, causing cookies to brown more quickly. Use a light-colored or silicone baking sheet, or grease your sheet well to prevent sticking and excess browning.

5. Humidity:

* High Humidity: High humidity can cause cookies to bake more slowly, which can lead to excessive browning. Try adjusting your baking time if you live in a humid climate.

Tips to Prevent Over-Browning:

* Lower the Oven Temperature: Start by reducing the oven temperature by 25 degrees Fahrenheit.

* Use a Baking Stone: A baking stone can help distribute heat more evenly and prevent hot spots.

* Use a Cookie Sheet with a Lower Edge: The lower edge allows air to circulate more freely around the cookies, preventing them from browning too quickly.

* Check for Doneness Early: Start checking your cookies for doneness a few minutes before the recommended baking time.

By understanding the reasons behind your cookies' browning, you can troubleshoot the issue and bake delicious, perfectly browned cookies every time.