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Easily feed a crowd with this 5-minute prep breakfast potato egg casserole – a family favorite and the perfect make-ahead meal!

Egg and potato Casserole baked in a dish and topped with green onions.
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Prepped in 5!

We have breakfast for dinner at least ONCE a week because we love breakfast that much! Breakfast casseroles are one of our go-to’s because they’re so simple and today’s recipe for potato egg casserole is one of our favorites.

We first made this for a holiday breakfast years ago and have had it on repeat since. It’s filled with cheesy potatoes, eggs and sausage and is so delicious and simple (it’s prepped in 5 minutes!)

As with most casseroles, this is perfect for making ahead of time for an easy morning (think holidays or busy weekends). Even so, it’s simple the morning of – just mix and bake and it’s ready in 40 minutes!

Pair it with a sweet casserole like Coffee Cake or Cinnamon Bites for a complete meal.

WHY WE LOVE IT:

  • Filling. This particular casserole has potatoes, eggs, sausage, and cheese – some of our favorite hearty breakfast or brunch ingredients.
  • For an easy morning. This egg bake is prepped in 5 minutes and on the table in 40 for a less-fuss way to start your day.
  • Prep the night before. Store in the fridge or freezer until you’re ready to bake – perfect for holiday mornings!
Ingredients for breakfast potato casserole on counter.

Ingredients

  • 8 large eggs
  • ½ cup milk, room temperature
  • 1 (20-ounce) bag of frozen diced hash browns, thawed – To use fresh potatoes, peel and dice 20 ounces of russet potatoes – do not soak (the starch will thicken the casserole).
  • 9-10 ounces precooked Italian sausage – You can brown raw Italian sausage in a skillet before adding the recipe.
  • salt and pepper, to taste
  • 1½ cups shredded mild cheddar cheese, divided – Substitute or combine it with Swiss cheese, pepper jack cheese, or Colby Cheese. 
  • optional garnish – fresh herbs and spices like parsley and green onions or a dollop of sour cream

Flavor Variations

  • MEXICAN. Add chopped peppers and use Mexican blend cheese.
  • MEAT LOVERS. Add cooked bacon along with the sausage.
  • VEGGIE. Replace meat with a cup of chopped spinach, mushrooms, zucchini, red bell pepper, or broccoli florets. Sauté veggies in a large skillet before adding.

How to Make a Potato Egg Casserole

  1. PREP. Preheat the oven to 350°F. Spray a 9×13-inch baking dish with cooking spray. Set ½ cup cheese aside.
  2. COMBINE. In a large bowl, add 8 eggs, ½ cup milk, 20 ounces thawed hashbrowns, 9-10 ounces cooked sausage, salt & pepper to taste, and 1 cup of shredded cheddar cheese. Stir until combined and pour the egg mixture into the prepared baking pan.
  3. BAKE. Bake for 32–35 minutes. Remove from the oven and sprinkle the remaining ½ cup cheese over the top. Place it back in the oven and bake for 3–5 minutes.
Slice of breakfast potato casserole on white plate.

Complete The Meal

Side Dishes

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4.99 from 270 votes

Breakfast Potato Casserole

By: Lil’ Luna
Easily feed a crowd with this 5-minute prep breakfast potato casserole – a family favorite and the perfect make-ahead meal!
Servings: 12
Prep: 5 minutes
Cook: 35 minutes
Total: 40 minutes

Ingredients 

  • 8 large eggs
  • ½ cup milk, room temperature
  • 1 (20-ounce) bag frozen diced hash browns, thawed
  • 9-10 ounces precooked Italian sausage
  • salt and pepper, to taste
  • cups shredded mild cheddar cheese, divided

Instructions 

  • Preheat the oven to 350°F. Grease a 9-x-13-inch baking dish and set aside.
  • In a large bowl, mix eggs, milk, hash browns, sausage, salt, pepper, and 1 cup of cheese until combined. Pour into the prepared baking dish.
  • Bake for 32–35 minutes. Remove from the oven and add the remaining ½ cup cheese on top. Place back in the oven and bake for an additional 3–5 minutes.

Video

Notes

Make ahead. Cover with plastic wrap and store in the fridge for up to 24 hours, or wrap again with foil and freeze for up to 2 months. Thaw in the refrigerator before baking. Add a few extra minutes to the baking time.
Store leftovers in an airtight container in the refrigerator for 3-4 days or freezer for 1-2 months.

Nutrition

Calories: 227kcal, Carbohydrates: 9g, Protein: 12g, Fat: 15g, Saturated Fat: 7g, Cholesterol: 143mg, Sodium: 314mg, Potassium: 258mg, Vitamin A: 340IU, Vitamin C: 4.3mg, Calcium: 156mg, Iron: 1.3mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Recipe FAQ

Make ahead of time?

Cover with plastic wrap and refrigerate for up to 24 hours or wrap again with aluminum foil and freeze for up to 2 months. Thaw in the fridge before baking. Add a few extra minutes to the baking time.

How to store?

Store leftovers in an airtight container in the refrigerator for 3-4 days or freezer for 1-2 months.

About Kristyn

My name is Kristyn and I’m the mom of SIX stinkin’ cute kids and the wife to my smokin’ hot hubby, Lo. My mom’s maiden name is Luna, and I’m one of the many crafty “Lil’ Lunas” in the fam. On this site I like to share all things creative - from recipes to home decor to gifts and home decor ideas. Welcome!

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4.99 from 270 votes (240 ratings without comment)

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Recipe Rating




88 Comments

  1. Mary says:

    Your recipes are great! I’ve made many! But the website is the worst. Jumps around all the time with ads. Can’t even get through the recipe without it jumping back to the top of the page.
    I totally get having the ads but this is the worst experience I’ve ever seen on a recipe website.
    Love your recipes though!

    1. Lil'Luna Team says:

      Thank you for your honest feedback about the website and the recipes!

  2. Diane Schultz says:

    your recipe notes say: Perfect Prep. The milk should be about room temperature before adding the melted butter. Otherwise, the butter will harden up into little flakes or droplets instead of mixing with the other two ingredients.

    the recipe does not call for melted butter anywhere.
    I am confused

  3. Sandy says:

    5 stars
    Thank you for another delicious & very easy to assemble recipe.
    Just ordered your cookbook and cannot wait to get it.
    Thanks again 🙂
    Sandy

  4. Ally G says:

    5 stars
    This recipe is a great way to use up leftovers from wholesale stores like Sam’s Club if you are in a small household (1-2 people) and you like their pre-seasoned, pre-cooked meats. My husband and I buy carnitas and barbacoa from Sam’s club and typically have 8-10 oz of leftovers after a taco night. I’ve tried both as substitutes for the sausage in this recipe and the end result is AMAZING.

  5. Pen H says:

    Can I freeze this recipe? Wondering about making in advance, baking and then freezing. Or freezing before baking and talking out to bake later

    1. Lil'Luna Team says:

      Yes you definitely can!! You can freeze it, uncooked, for up to 2 months. Wrap the pan tightly with plastic wrap and again with foil. Thaw in the fridge before baking. You can also freeze it after it is baked.

  6. Emily Ruger says:

    It didn’t say cooked sausage in the directions but says so in the video…

    1. Lil'Luna Team says:

      On the instruction card, the ingredients listed say pre-cooked Italian sausage, so you’ll want to go with that for this recipe! Hope you enjoy!

  7. Lisa Woods says:

    5 stars
    Delicious! I did the overnight method. I used leftover ham. I was afraid the potatoes would get soggy overnight, so I browned them in a skillet before mixing it all together. This will be my go to breakfast casserole. Perfect for when the grands are spending the night!

  8. Katie says:

    So I am having a large brunch (70 people) and wondered about double batches in larger foil pans? Any advice on baking times?