This Mexican Breakfast Casserole is a healthy brunch recipe that is easy to meal prep ahead of time and bake in the oven when you're ready to eat. It's full of ground sausage, salsa, eggs, cheese, corn tortillas, and tons of spicy taco flavor!
Preheat oven to 375 °F.
Add oil, onions, and peppers to a large skillet and sauté for 2-3 minutes over medium heat.
Add ground sausage and beef. Cook for 6-8 minutes or until cooked through. Use a potato masher to crumble the meat.
Layer half of the meat mixture, 16 tortilla quarters, half of the salsa/corn mixture, and 1 cup of cheese. Repeat all layers except for the last cheese layer.
Bake for 45-55 minutes, or until middle no longer jiggles.
Stop before baking and refrigerate the casserole dish for up to 2 days.
On the morning of serving, pull out the dish at least 30 minutes ahead of time so it can come to room temperature.
Proceed with the baking directions as instructed.