Cut mirlitons into 1 inch cubes. Place in a microwave-safe bowl, and cook on high until soft, about 12 minutes. In the work bowl of a food processor, add mirliton, and process until smooth.
In a large Dutch oven, melt butter over medium heat; add green onion, garlic, and celery, and cook until softened. Add bay leaf and mirliton, and cook over medium-high heat until most of the liquid evaporates, about 5 minutes.
Add Crawfish Stock, salt, pepper, and Creole seasoning. Cover and cook for 45 minutes, stirring occasionally. Remove bay leaf, and add the crawfish, crabmeat, and half-and-half. Simmer for 5 minutes, and serve.
Notes
*Mirlitons are also sold as chayote squash. Seafood stock may be substituted.
Recipe by Louisiana Cookin' at https://louisianacookin.com/crawfish-crab-and-mirliton-cream-soup/