We have breakfast for dinner at least ONCE a week because we love breakfast that much! Breakfast casseroles are one of our go-tos because they’re so simple, and this potato egg casserole is one of our FAVORITES!!

We first made this for a Christmas morning years ago and have had it on repeat ever 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 to make on 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 think you’ll 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 egg casserole on counter.

Potato Egg Casserole Ingredients and Substitutions

  • 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 and par-boil them.
  • 9-10 ounces precooked Italian sausage – You can brown raw Italian sausage in a skillet before adding it to 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

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 aside ½ cup of cheese.
  2. COMBINE. In a large bowl, whisk eggs, milk, and stir in thawed hashbrowns, cooked sausage, salt & pepper to taste, and 1 cup of shredded cheddar cheese until combined. 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.
  • We will either use precooked sausage from the refrigerator section or cook up raw sausage and drain the grease before adding it to the recipe.
  • This recipe is easy to add jalapenos, spinach, mushrooms, zucchini, red bell pepper, or broccoli florets. Sauté veggies in a large skillet before adding.
  • To use fresh potatoes, peel, dice, and boil for about 8 minutes. Drain well and mix into the recipe. 
Slice of breakfast potato egg casserole on white plate.
4.99 from 270 votes

Potato Egg Casserole

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

Video

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 9×13-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.
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Notes

Recipe tips.
  • We will either use precooked sausage from the refrigerator section or cook up raw sausage and drain the grease before adding it to the recipe.
  • This recipe is easy to add jalapenos, spinach, mushrooms, zucchini, red bell pepper, or broccoli florets. Sauté veggies in a large skillet before adding.
  • To use fresh potatoes, peel, dice, and boil for about 8 minutes. Drain well and mix into the recipe. 
Make ahead of time. 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.

This recipe was originally published December 2013.

About Kristyn

Kristyn Merkley is a published cookbook author, wife, mom of six, and major food enthusiast! For the past 15 years, she has been sharing foolproof, family-friendly recipes—each one tested in her kitchen—that anyone can master. As a seasoned recipe creator, she loves making cooking simple, stress-free, and totally doable for everyone!

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4.99 from 270 votes (240 ratings without comment)

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94 Comments

  1. Jane says:

    What could I substitute for the sausage? I don’t care for it, plus it upsets my stomach.

    1. Lil' Luna Team says:

      You could use diced ham, cooked crumbled bacon, or omit it altogether.

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