1 large onion, chopped 
1/4 cup chopped green onions 
3 cloves garlic, chopped 
1/2 bell pepper, chopped 
2 ribs celery, chopped 
1/2 cup butter 
1 (10 3/4 ounce) can cream of celery soup 
4 tablespoons tomato sauce 
1 pound peeled crawfish tails 
1/4 cup chopped parsley 
1 teaspoon salt 
1/2 teaspoon red pepper 
1/2 teaspoon black pepper 
1 cup milk 
1/2 cup Italian bread crumbs 
1 egg, beaten 
18 individual unbaked tart shells