Crock Pot Cajun Stew

There were not nearly enough spices in here.  I have no idea what cajun spices are but next time I make this I am going to find out and add a lot of them.

Ingredients
3/4 pound andouille or kielbasa, sliced into 1/2-inch-thick rounds
1 red onion, sliced into wedges
2 garlic cloves, minced
2 celery stalks, coarsely chopped
1 red or green bell pepper, coarsely chopped
2 tablespoons all-purpose flour
1 (28-ounce) can diced tomatoes
1/4 teaspoon cayenne pepper
Coarse salt
1/2 pound large shrimp, peeled and deveined
2 cups frozen cut okra (from an 8-ounce package), thawed

Add everything to the crock pot with 1/2 cup of water except the shrimp and okra.  Cook on low all day.  Leave the okra and shrimp in the fridge to thaw.  Come home and add the shrimp and okra, cook for a few minutes until the shrimp are pink.