Chiles Rellenos Breakfast Casserole

Instructions:

1. Step 1:

   Combine onion and vinegar in a small bowl. Set aside.

2. Step 2:

   Combine poblanos, black beans, corn, and cheese in a large bowl. Season with salt and pepper.

3. Step 3:

   Preheat oven to 375°F (190°C). Place sausage in a skillet over medium heat. Cook, breaking up sausage with a wooden spoon, until browned, about 6 minutes. Add to bowl with vegetable mixture. Drain onion and add to vegetable mixture. Transfer mixture to a 13 x 9-inch baking dish and spread out in an even layer.

4. Step 4:

   In a separate bowl, whisk eggs until consistent in color. Whisk in flour and baking powder until well combined. Season with salt and pepper, then pour over vegetable mixture in baking dish. Bake 30 to 40 minutes or until set.