REC: Microwave Roux. I've made this for years, and it is foolproof. Very easy start for gumbo...
2/3 cup oil
2/3 cup flour
2 cups onion, chopped
1 cup celery, chopped
1/2 cup bell pepper, chopped
4 cloves garlic, chopped
1/4 cup parsley, chopped
1/4 cup green onion tops, chopped
1/4 cup hot water, approximately
Mix oil and flour in a 4-cup glass measure. Microwave on high for 6 minutes. Remove from the oven (the container will be hot, hot) and stir well. The roux will be light brown. Return to the oven and cook 30 seconds to 1 minute longer or until the dark color you want is reached. Stir the onion, celery and bell pepper into the roux in the same measuring cup and cook 3 minutes. Then add the garlic, parsley and onion tops and cook 2 more minutes. If any oil has come to the top, pour this off. Slowly add enough hot water to bring the roux up to the 4-cup mark.
This base can be used for any gumbo, chicken and sausage, shrimp, seafood, etc.