This warm and cheesy Potatoes O’Brien Breakfast Casserole is perfect for starting your day right! Made with fluffy potatoes, bell peppers, and eggs, it’s hearty and filling.
It’s like a big ol’ breakfast hug in a dish! I love making it on weekends to treat myself and friends. Just pop it in the oven and let it work its magic—easy and yummy!
Ingredients & Substitutions
Potatoes: I recommend using Russet or Yukon Gold potatoes. They’re starchy and fluffy, perfect for this casserole! If you’re in a pinch, frozen hash browns can also work, just skip the sautéing step.
Bell Peppers and Onions: Fresh bell peppers add color and sweetness. Red and green are great, but if you’re out, you can use frozen mixed peppers. For onions, yellow onions could easily replace the diced onions.
Eggs: I stick with large eggs, but if you want to reduce cholesterol, egg whites or egg substitutes can work too. Just remember that flavor might vary a bit!
Cheese: Cheddar cheese gives a nice sharp flavor. Feel free to experiment with Monterey Jack or Pepper Jack for some heat. For a lower-fat option, try using reduced-fat cheese.
Sausage or Bacon: I love adding breakfast sausage for extra flavor. If you’re vegetarian, consider using vegan sausage or simply leave it out for a meatless dish.
How Do I Get the Perfect Texture for My Casserole?
The key to a great casserole is balancing your ingredients well so you get that lovely texture! Here’s how:
- Make sure to sauté the potatoes until they start getting golden. This enhances the flavor and prevents them from being too wet.
- Let the vegetable mix cool slightly before adding it to the egg mixture. This prevents the eggs from curdling.
- Don’t overmix the egg mixture; just fold in the ingredients gently. This keeps the casserole fluffy.
- Let the casserole sit for a few minutes after baking before serving. This makes it easier to cut and hold its shape.
With these tips, your casserole will have a wonderful texture—crispy on top and tender inside. Enjoy tasty, hearty moments with every bite!
Delicious Potatoes O’Brien Breakfast Casserole
Ingredients You’ll Need:
For the Base:
- 4 cups diced potatoes (Russet or Yukon Gold)
- 1/2 cup diced red bell peppers
- 1/2 cup diced green bell peppers
- 1 cup diced onions
For the Filling:
- 6 large eggs
- 1 cup shredded cheddar cheese (plus extra for topping)
- 1/2 cup cooked and crumbled breakfast sausage or bacon (optional)
- 1/4 cup milk
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
For Cooking:
- 1 tablespoon vegetable oil or butter (for sautéing)
For Garnish:
- 2 green onions, chopped (for garnish)
How Much Time Will You Need?
This delicious casserole takes about 15 minutes of prep time and 30-35 minutes to bake, making it perfect for a hearty breakfast or brunch. Just a bit of chopping and sautéing, then let the oven do the work! Total time: around 50 minutes.
Step-by-Step Instructions:
1. Preheat and Prepare:
Start by preheating your oven to 375°F (190°C). While the oven warms up, grease a 9×13-inch baking dish to ensure your casserole comes out easily once it’s baked.
2. Sauté the Potatoes:
In a skillet over medium heat, add the vegetable oil or butter. Once hot, toss in the diced potatoes and sauté them for about 10 minutes, stirring occasionally, until they start to soften and lightly brown. This gives them a delicious flavor and perfect texture!
3. Add the Veggies:
Now, add the diced red and green bell peppers along with the onions to the skillet. Continue to cook for an additional 5-7 minutes, or until the vegetables are nicely tender and a little caramelized. Once done, remove from heat and let it cool slightly.
4. Mix the Egg Base:
In a large mixing bowl, whisk together the eggs, milk, salt, and black pepper until the mixture is well combined. This will be the base of your casserole.
5. Combine Everything:
Gently stir the potato and vegetable mixture, along with the shredded cheese and any optional cooked sausage or bacon, into the egg mixture. This will create a creamy, flavor-packed filling!
6. Pour and Spread:
Pour the combined mixture into your prepared baking dish, spreading it evenly. Don’t forget to sprinkle a little extra shredded cheddar cheese on top for a melty, golden finish!
7. Bake to Perfection:
Slide your casserole into the preheated oven and bake for 30-35 minutes, or until the eggs are set and the top looks beautifully golden and bubbly. The aroma will be irresistible!
8. Rest and Serve:
Once it’s done, let the casserole rest for about 5 minutes. This helps everything set up nicely. Serve it warm, garnished with a sprinkle of chopped green onions for that fresh touch!
Enjoy your hearty and flavorful Potatoes O’Brien Breakfast Casserole with family and friends. It’s a delightful way to jumpstart your day!
Can I Use Frozen Potatoes for This Casserole?
Yes, you can use frozen diced potatoes or hash browns! Just thaw them first and pat them dry to remove excess moisture before sautéing, which will help maintain the casserole’s texture.
Can I Prepare This Casserole the Night Before?
Absolutely! You can assemble the casserole the night before and refrigerate it unbaked. In the morning, bake it directly from the fridge, adding an extra 5-10 minutes to the cooking time if needed to ensure it’s fully set.
How Do I Store Leftovers?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat portions in the microwave or in the oven at 350°F (175°C) until warmed through. You might want to cover it with foil to prevent it from drying out.
Can I Make This Recipe Vegetarian?
Definitely! Simply omit the sausage or bacon, and feel free to add extra veggies like spinach, mushrooms, or zucchini for added flavor and nutrition. It will still be delicious!