loisiana sunday seafood casserole

Ingredients

• 1/2 cup chopped onion
• 1/2 cup chopped celery
• 1/4 cup chopped bell pepper
• 1/2 cup tomato sauce
• 1/2 stick butter
• 1/2 can cream mushroom soup
• 1 clove garlic
• 1 pound craabmeat
• 1/2 pound large shrimp, peeled and deveined, cut in half
• 1 pound crawfish tail meat
• 1 teaspoon tabasco sauce, more or less to taste
• - salt and red pepper to taste