[header] How to make red velvet brownies [title] Preheat the oven. [step] To ensure that the oven is hot enough to bake the brownies, you must preheat it. Set the temperature to 350 degrees fahrenheit (177 degrees celsius), and allow it to heat fully. 
[substeps] Keep an eye on your oven so you're aware when it reaches the proper temperature. Most models will beep or flash an indicator light to let you know.