Allow the flour-oil mixture to darken slightly until it is slightly golden. You can cook until it's chocolate-brown if you desire.
Whisk in the seasonings, mixing until completely combined.
Slowly whisk in the chicken broth into the roux. Do this slowly, as it will allow the roux to be completely incorporated into the liquid.
Increase heat to medium-high until the sauce comes to a boil.
Once the roux has come to the boil, reduce heat to medium-low and simmer, whisking occasionally, for 5-10 minutes until enchilada sauce is near your desired thickness.
Turn off heat and remove saucepan from heat.
The sauce will still thicken slightly as it cools.
Nutritional information is an estimate and provided as a courtesy. The values may vary according to the ingredients and tools that are used. Please use your preferred nutritional calculator for more detailed information.