Follow these straightforward steps to create your own Cajun Seafood Pot Pie:

1. Preheat the Oven: Preheat your oven to 425°F (220°C).
2. Sauté Vegetables: In a large skillet, melt the butter over medium heat. Add the diced onion, bell pepper, and celery, sautéing until softened, about 5 minutes.
3. Add Seafood: Stir in the shrimp and cook for another 3-4 minutes until they start to turn pink.
4. Make the Sauce: Sprinkle the flour over the mixture and stir to combine. Slowly add the seafood broth and heavy cream, whisking to prevent lumps. Cook until the mixture thickens, about 5 minutes.
5. Season the Filling: Add the Cajun seasoning, frozen vegetables, crab meat, salt, and pepper. Mix well and remove from heat.
6. Prepare the Crust: Roll out one pie crust and fit it into a 9-inch pie dish. Pour the seafood filling into the crust.
7. Top with Crust: Place the second pie crust on top. Seal and crimp the edges to prevent leaks. Cut slits in the top crust to allow steam to escape.
8. Brush with Egg: Brush the top crust with the beaten egg for a golden finish.
9. Bake: Place in the oven and bake for 30-40 minutes, or until the crust is golden brown.
10. Cool and Serve: Let the pot pie cool for about 10-15 minutes before slicing and serving.

Following these steps will guide you in making a delightful Cajun Seafood Pot Pie that dazzles both the eyes and the palate.