How long to bake a 9x13 cake instead of 2 8 round pans?

Baking times vary depending on the oven and batter consistency, so it's important to check the cake for doneness before removing it from the oven. Here's a general guideline for baking a 9x13 inch cake instead of two 8-inch round pans:

- Preheat the oven to the temperature specified in the recipe.

- Prepare the 9x13 inch baking pan by greasing and flouring it.

- Pour the cake batter into the prepared pan and smooth the top.

- Bake the cake in the preheated oven for approximately 30-40 minutes.

- To test if the cake is done, insert a toothpick into the center of the cake. If the toothpick comes out clean, the cake is done.

- Let the cake cool completely in the pan before frosting and serving.

It's important to note that baking times may vary depending on the specific recipe you're using, so always refer to the recipe instructions for the most accurate baking time.