Turn on saute setting. Add 2 tbs of vegetable oil and 1 lb andouille sausage. Cook andouille sausage until browned. Keep an eye on the sausage, stirring frequently, making sure the pan does not begin to burn. Remove andouille sausage and set aside.
Deglaze pan with 2 tbs of chicken broth. The pan drippings will add to the flavor.
Add ½ cup vegetable oil and ½ cup flour. Stir continuously, paying careful attention not to burn. You will want to keep cooking for about 10 to 15 minutes to create a thick, brown color roux.
Add in 3 chopped celery stalks, 1 chopped onions, 4 minced garlic cloves, and 1 chopped bell pepper. Cook on saute setting, stirring them into the roux, and continuously stirring until they have softened.
Add 32 oz chicken broth and mix well. Add in 2 tbs creole seasoning, 2 tbs Worcestershire sauce, 2 tsp gumbo file powder, 10 oz okra, 14 oz canned crushed tomatoes, okra, and cooked andouille sausage. Cover and lock lid. Cook on manual high for 10 minutes.
Fast release. Remove lid. Turn on saute setting. Add in 1 lb shrimp. Cook an additional 5 or more minutes until shrimp is completely cooked.
Serve as is or over rice.