In saucepan, melt butter and add flour. Stir to combine well.

Add spices to rue mixture and stir.

Cook for about a minute or two to get rid of raw flour taste.

Add beef broth and RoTel. whisk until smooth.

Cook until thickened.

I added a touch more broth because I like mine rather thin, adjust to your preference.

I don't add salt, but if using in yours, use unsalted butter and low sodium broth and it wont be so salty.