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Potatoes O'Brien Breakfast Casserole

Potatoes O'Brien Breakfast Casserole

Potatoes O'Brien Breakfast Casserole is your go-to solution for a stress-free and delicious morning meal, perfect for feeding a crowd or enjoying leftovers throughout the week. This hearty and flavorful dish combines classic breakfast ingredients into an easy-to-prepare casserole that's sure to become a family favorite.
Prep Time 15 minutes
Cook Time 35 minutes
Resting Time 5 minutes
Total Time 50 minutes
Servings: 6 servings
Course: Breakfast, Brunch

Ingredients
  

  • 2 pounds frozen Potatoes O'Brien (diced potatoes with bell peppers and onions)
  • 1 pound breakfast sausage (pork, turkey, or vegetarian alternative), cooked and crumbled
  • 1 cup shredded cheddar cheese, divided
  • 1/2 cup milk
  • 4 large eggs
  • 1/4 teaspoon salt
  • 1/8 teaspoon black pepper
Optional toppings
  • chopped fresh chives
  • sour cream
  • hot sauce

Equipment

  • 9x13 inch baking dish
  • Medium Bowl

Method
 

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish with cooking spray or butter.
  2. If your frozen Potatoes O'Brien needs preliminary cooking (check package directions, some are ready to go), prepare them as instructed. For most, you can simply spread them out evenly in the prepared baking dish. Ensure they are in a single layer as much as possible.
    2 pounds frozen Potatoes O'Brien (diced potatoes with bell peppers and onions)
  3. Distribute the cooked and crumbled breakfast sausage evenly over the layer of Potatoes O'Brien in the baking dish.
    1 pound breakfast sausage (pork, turkey, or vegetarian alternative), cooked and crumbled, 2 pounds frozen Potatoes O'Brien (diced potatoes with bell peppers and onions)
  4. Sprinkle about half of the shredded cheddar cheese (1/2 cup) over the sausage and potatoes. This will create a delightful cheesy layer within the casserole.
    1 cup shredded cheddar cheese, divided, 1 pound breakfast sausage (pork, turkey, or vegetarian alternative), cooked and crumbled, 2 pounds frozen Potatoes O'Brien (diced potatoes with bell peppers and onions)
  5. In a medium bowl, whisk together the milk, eggs, salt, and pepper until well combined and slightly frothy. This mixture will act as the binder for your casserole, ensuring everything holds together beautifully.
    1/2 cup milk, 4 large eggs, 1/4 teaspoon salt, 1/8 teaspoon black pepper
  6. Gently and evenly pour the whisked egg mixture over the ingredients in the baking dish. Try to cover all areas of the sausage and potatoes.
    1/2 cup milk, 4 large eggs, 1/4 teaspoon salt, 1/8 teaspoon black pepper, 1 pound breakfast sausage (pork, turkey, or vegetarian alternative), cooked and crumbled, 2 pounds frozen Potatoes O'Brien (diced potatoes with bell peppers and onions)
  7. Sprinkle the remaining 1/2 cup of cheddar cheese over the top of the casserole. This will create a beautiful golden-brown, cheesy crust as it bakes.
    1 cup shredded cheddar cheese, divided, 1/2 cup milk, 4 large eggs, 1/4 teaspoon salt, 1/8 teaspoon black pepper, 1 pound breakfast sausage (pork, turkey, or vegetarian alternative), cooked and crumbled, 2 pounds frozen Potatoes O'Brien (diced potatoes with bell peppers and onions)
  8. Place the baking dish in the preheated oven. Bake for 35-40 minutes, or until the eggs are set and the top is golden brown and bubbly. You should see the cheese melted and slightly browned in spots.
  9. Once baked, carefully remove the casserole from the oven. Let it rest for about 5-10 minutes before slicing and serving. This allows the casserole to set up, making it easier to cut clean portions.
  10. Serve the Potatoes O'Brien Breakfast Casserole hot. Offer optional toppings like fresh chives, a dollop of sour cream, or a dash of your favorite hot sauce to customize each serving.
    chopped fresh chives, sour cream, hot sauce

Notes

Storing leftovers: Allow the casserole to cool completely before storing in an airtight container in the refrigerator for up to 3-4 days.
Reheating (oven): Cover loosely with foil and bake at 325°F (160°C) for 15-20 minutes for individual servings, or 25-30 minutes for larger portions. Remove foil for the last few minutes to re-crisp.
Reheating (microwave): Place a portion on a microwave-safe plate. Microwave on 50% power for 1-2 minutes, stirring halfway through.
Freezing: Wrap individual portions tightly in plastic wrap, then place in a freezer-safe bag or container for up to 1-2 months. Thaw overnight in the refrigerator before reheating.