Make any color roux required by your recipe, blonde to chocolate.
Use the proportion of 4 parts flour to 2 parts oil.
2c flour and 1c oil
It takes roughly the same time to prepare a larger amount, so I prep a large amount and save it for another use later.
Place on the middle rack in a preheated oven.
Set a timer for 30 minutes.
Reset timer for 30 minutes.
Color should be golden to peanut butter color.
For a darker roux, continue cooking.
Reset timer for 15 minutes.
Continue to reset timer for 5-15 minutes depending on the color you are trying to achieve.
It will continue to cook for a few minutes after removing it from the heat...and it darkens more quickly near the end, so take care to not let it burn!