-
1
Grease an 8-inch square baking pan and preheat the oven to 350u00b0F (if you're baking the casserole on the same day). In a large skillet over medium-high heat, crumble and cook the sausage until completely browned and cooked through. Remove the sausage to a paper-towel-lined plate to drain. Discard all but a couple of teaspoons of its grease.
-
2
Place peppers, jalapenos, and onions into the skillet and toss to coat them with the grease. Saute them for a few minutes until they're soft and the onions are beginning to turn translucent. Add the garlic and cook for about 30 seconds, stirring constantly, until it's fragrant. Remove this mixture to the paper-towel-lined plate with the sausage.
-
3
Add the olive oil to the skillet. Brown the hash browns in batches by spreading out about a third of them over the bottom of the skillet in a flat layer. Cover the skillet and let them cook without stirring for around 10 minutes (double-check the directions on your hash browns package). When one side is browned, flip the hash browns and brown the other side. Remove these to a separate paper-towel-lined place. Continue until all hash browns are browned.
-
4
Place half of the hash browns into the baking pan in an even layer. Top with half of the sausage, peppers, and onions mixture and 1/2 cup of cheese. Repeat these layers once more. In a small bowl, whisk together the egg, evaporated milk, cayenne pepper, paprika, salt and pepper. Pour this mixture evenly over the hash brown casserole and cover it with aluminum foil. You can refrigerate the casserole overnight at this point or bake immediately. If you refrigerate it, let it sit out at room temperature while the oven preheats.
-
5
Bake the casserole for around 50 minutes before removing the foil and baking an additional 10-15 minutes. Let the casserole cool for 10 minutes before serving it with sour cream, diced jalapenos, hot sauce, salsa, green onions, and some fresh cilantro or parsley.
