1. Preheat the oven to 350°F (175°C).
2. In a skillet, heat olive oil over medium heat. Add chopped onion, red bell pepper, and ground sirloin. Cook until the meat is browned and the vegetables are tender. Drain any excess fat.
3. Stir in salt, black pepper, garlic powder, cumin, and allspice. Mix well to combine the flavors.
4. In a separate bowl, combine the beaten eggs, sour cream, and a splash of milk.
5. Grease a baking dish and spread half of the green chiles in the bottom.
6. Sprinkle half of shredded cheddar cheese over the chiles.
7. Spoon the meat mixture over the cheese layer.
8. Layer the remaining green chiles on top of the meat.
9. In a small bowl, mix all-purpose flour with the egg and sour cream mixture until smooth. Pour this mixture evenly over the casserole.
10. Bake in the preheated oven for about 45 minutes, or until the casserole is set. 10 minutes before dish is done, sprinkle remaining cheese and have it melt.
Allow the casserole to cool slightly before serving.
Enjoy your homemade Chile Rellenos Casserole, a delicious Mexican dish that brings together the flavors of chile rellenos in a convenient casserole form. Whether served as a main course or a delightful side dish, this recipe is sure to impress your family and friends!
