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.
Key Ingredients for Potatoes O’Brien Breakfast Casserole
- 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
How to Make Potatoes O’Brien Breakfast Casserole
Get ready for a breakfast that’s incredibly easy to assemble, bursting with savory flavors, and wonderfully satisfying. This Potatoes O’Brien Breakfast Casserole boasts a delightful combination of tender potatoes, savory sausage, and melted cheese, all bound together by a light and creamy egg mixture. It’s a dish that comes together with minimal fuss and maximum deliciousness, making it ideal for busy mornings. The preparation time is approximately 15 minutes, with a baking time of about 35-40 minutes, promising a delightful meal without the long wait.
Step-by-Step Instructions
- Preheat your oven and prepare the baking dish: Preheat your oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish with cooking spray or butter.
- Prepare the Potatoes O’Brien: 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.
- Add the crumbled sausage: Distribute the cooked and crumbled breakfast sausage evenly over the layer of Potatoes O’Brien in the baking dish.
- Sprinkle with cheese: 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.
- Whisk the egg mixture: 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.
- Pour the egg mixture over the casserole: 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.
- Add the remaining cheese: 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.
- Bake the casserole: 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.
- Let it rest before serving: 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.
- Serve and enjoy: 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.
Why You’ll Love This Potatoes O’Brien Breakfast Casserole
You’ll adore this Potatoes O’Brien Breakfast Casserole for its effortless assembly that delivers maximum breakfast bliss without the morning scramble. The star of this dish is undoubtedly the perfectly seasoned Potatoes O’Brien, providing a fantastic base of tender potatoes with vibrant bits of bell pepper and onion already mixed in, saving you precious prep time. Plus, making this hearty casserole at home is incredibly budget-friendly, allowing you to create a delightful meal for a fraction of the cost of a restaurant brunch, all while impressing everyone with its rich, savory flavors and satisfying texture.
Imagine waking up to the aroma of this golden, cheesy delight filling your kitchen – it’s a comforting and delicious alternative to a traditional scrambled egg dish or a more complex frittata. The combination of crispy-edged potatoes, savory sausage, and gooey cheese is simply irresistible, and it’s so versatile; you can easily adapt it with different cheeses or even add a protein like bacon. Don’t just dream about an amazing breakfast, make it a reality! Give this Potatoes O’Brien Breakfast Casserole a try this weekend; it’s guaranteed to become a new favorite.
Storing and Reheating Tips
Storing Leftovers:
- Allow the Potatoes O’Brien Breakfast Casserole to cool completely before storing.
- Transfer any leftover portions to an airtight container.
- Store the covered casserole in the refrigerator for up to 3-4 days.
Reheating Instructions:
- Oven Method (Recommended for best texture): Reheat individual servings or larger portions in an oven-safe dish. 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, until heated through and the cheese is re-melted. Remove the foil for the last few minutes if you want to re-crisp the top.
- Microwave Method: For a quicker reheat, place a portion on a microwave-safe plate. Microwave on 50% power for 1-2 minutes, stirring halfway through, until heated through. The texture might be slightly softer than oven-reheated.
Freezing for Future Meals:
- Individual Portions: Cut cooled casserole into individual servings and wrap each tightly in plastic wrap, then place in a freezer-safe bag or container.
- Larger Portions: Once completely cooled, you can wrap the entire remaining casserole (or a portion of it) tightly in plastic wrap, followed by a layer of aluminum foil or a freezer-safe container.
- Freezing Time: Frozen Potatoes O’Brien Breakfast Casserole will maintain its best quality for up to 1-2 months.
- Thawing and Reheating from Frozen: Thaw overnight in the refrigerator before reheating using the oven method for best results. You can also reheat directly from frozen at a lower temperature (around 300°F/150°C), which will require a longer reheating time (40-50 minutes), covered with foil.
Final Thoughts
This Potatoes O’Brien Breakfast Casserole is a winning combination of convenience, flavor, and comfort for any morning. Its simple preparation and satisfying taste make it a perfect choice for anyone looking to elevate their breakfast routine. Give it a try – your taste buds will thank you!
try also :
- Air Fryer Sweet Potatoes
- Crockpot Beef Fajitas
- Ground Turkey Sweet Potato Bake
- Cheesy Pumpkin Stuffed Pretzel Bites
- Find more in Pinterest
- Medium

Potatoes O’Brien Breakfast Casserole
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish with cooking spray or butter.
- 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)
- 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)
- 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)
- 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
- 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)
- 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)
- 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.
- 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.
- 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
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.