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Home / Recipes

Whole30 Hash Brown Breakfast Casserole

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By: Madeline Tague

Updated: April 29, 2024

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This Whole30 Hash Brown Breakfast Casserole is an easy make-ahead breakfast. Prep this hashbrown breakfast casserole once and enjoy it all week.

Side view of slices of hashbrown breakfast casserole on a plate

Make-ahead

Minimal prep

You’ll Learn: The benefit of sautéing veggies and hash browns together for added flavor

Worth It: It builds a freezer stash for stress-free meals later

Bonus: Easy to tailor to common diets

Above view of breakfast casserole with hashbrowns in a baking dish

Start your weekly meal prep with a hashbrown breakfast casserole recipe!

If you have a healthy breakfast prepped and ready to go, you will start your day off on the right foot. I find that the simple act of eating a prepared breakfast like this Whole30 hash brown breakfast casserole helps me to make better choices throughout the day. I will be more likely to head to the gym and cook a healthy dinner after work.

Eating a healthy breakfast was particularly important when I did my first Whole30. Before the Whole30 I rarely ate breakfast, but now I realize that it makes me a better person for the rest of this day. Keep reading to see how easy it is to make this healthy Whole30 hash brown breakfast casserole.

Above view of hash browns in a frying pan with onions and red bell peppers

Prep this breakfast casserole with hash browns once and enjoy all week!

I created this Whole30 hash brown breakfast casserole as a simple, meal prep dish. It is easy to make in less than an hour on a Sunday and have your breakfast prepped for you for the whole week. It reheats well in a microwave or toaster oven.

When I ate this casserole for breakfast I either enjoyed it on its own or with some ketchup or with a side of chicken sausage. This casserole is also great for a party or a potluck. It gives all of the comfort of hash browns with the ease of a one pan meal or casserole.

 
Above view of a spatula taking a slice of a breakfast casserole with hash browns

What kitchen tools and ingredients will I need to make this hashbrown breakfast casserole?

Grab a few simple ingredients and basic kitchen tools in order to make this Whole30 hash brown breakfast casserole. To begin, you will need a sharp knife to dice the onion and bell pepper.

Then, you will need a bowl and whisk for the eggs and you will need a simple frying pan. Other than that you will need a 9×13 baking dish for baking your Whole30 casserole.

I like to use a thicker-walled ceramic casserole dish. If you only have a metal or glass pan, that will work too.

The basic ingredients you will need to make this Whole30 hash brown breakfast casserole are a yellow onion, red bell pepper, eggs, oil, salt, pepper, and frozen hash browns.

If you are on the Whole30, you will need to ensure that the ingredients are Whole30 compliant. Check that the hash browns do not include any sugars like dextrose.

Side view of slices of hashbrown breakfast casserole on a plate

How to make a hashbrown breakfast casserole

To make this Whole30 hash brown breakfast casserole preheat the oven to 400F and grease a 9×13 baking dish with spray oil. Then dice the bell pepper and yellow onion.

Next, add avocado oil to a pan and heat over medium heat. When the oil is hot, add pepper and onion to the pan and sautee over medium heat until soft and fragrant – about 5 minutes.

Then, season the pepper and onion with salt and pepper and add the frozen hash browns to the pan. Cook the hash browns with the peppers and onions for another 3 minutes.

Then, pour cooked hash browns, peppers, and onions into the greased 9×13 baking dish. Next, scramble 10 eggs in a bowl and pour over the hash browns, peppers, and onions and stir gently.

Then, place the baking dish in the oven at cook for 30 minutes. After 30 minutes remove the casserole from the oven and allow it to cool before slicing it into even squares.

Enjoy this delicious Whole30 breakfast immediately or store it in the refrigerator for up to 7 days.

Check out these other healthy make ahead breakfast recipes

  • Paleo Breakfast Meal Prep
  • Whole30 Strawberry Chia Seed Pudding
  • Cheeseburger Breakfast Casserole
  • Turkey Sausage Tomato and Goat Cheese Breakfast Casserole

Keep reading to find the full recipe and if you make it, let me know in the comments or on Instagram!

Image for pinning hashbrown breakfast casserole recipe on Pinterest

You can find the full recipe below. If you make this recipe, please rate and review it in the comments, or share it with me on Instagram!

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Recipe

Whole30 Hash Brown Breakfast Casserole

5 from 2 votes
Prep your Whole30 breakfast ahead of time with this Whole30 Hash Brown Breakfast Casserole.
Recipe By: Madeline Tague
Prep: 10 minutes minutes
Cook: 40 minutes minutes
Print Review Pin It SaveSaved!
Servings: 6 servings

Ingredients

  • 1 tbsp avocado oil
  • 1 bell pepper
  • 1 yellow onion
  • 10 eggs
  • 3 cups frozen hash browns
  • 1/2 tsp salt
  • 1/2 tsp pepper
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Instructions

  • Preheat the oven to 400F and grease a 9×13 baking dish with spray avocado oil
  • Dice the bell pepper and yellow onion
  • Add avocado oil to a frying pan and heat over medium heat
  • Add the peppers and onions to the pan and saute over medium heat until soft and fragrant – about 5 minutes
  • Season the peppers and onions with salt and pepper and add the frozen hashbrowns to the frying pan
  • Cook the mixture for 3 minutes tossing frequently
  • Pour hashbrowns, peppers and onions into the greased 9×13 baking dish
  • Scramble 10 eggs in a bowl and pour over the hashbrowns, onions and peppers and stir gently
  • Place baking dish in the oven and cook at 400F for 30 minutes
  • Remove the casserole dish from the oven and allow to cool slightly
  • Slice the casserole into 12 even squares and enjoy!

Nutrition Information

Serving: 6g, Calories: 225kcal (11%), Carbohydrates: 22g (7%), Protein: 12g (24%), Fat: 10g (15%), Saturated Fat: 3g (19%), Polyunsaturated Fat: 2g, Monounsaturated Fat: 4g, Trans Fat: 0.03g, Cholesterol: 273mg (91%), Sodium: 323mg (14%), Potassium: 471mg (13%), Fiber: 2g (8%), Sugar: 2g (2%), Vitamin A: 1018IU (20%), Vitamin C: 35mg (42%), Calcium: 58mg (6%), Iron: 2mg (11%)

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition data is gathered primarily from the USDA Food Composition Database, whenever available, or otherwise other online calculators.

Did you make my Whole30 Hash Brown Breakfast Casserole?

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About

Madeline Tague

Hi, I’m Madeline! I am so excited to share my healthy and approachable recipes with you. Here you will find simple, comforting recipes that the whole family will enjoy. Turn on your favorite playlist or podcast and let’s get cooking!
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5 from 2 votes

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Recipe Rating




6 responses

  1. Gaby
    December 1, 2021

    5 stars
    Delicious! Added some Parmesan on top because my grandma made me haha… really good with or without.

    Reply
  2. Christol McKernan
    January 3, 2021

    5 stars
    I have made this casserole every week for the last month. I have added cheese, spinach, and cooked sausage. I’m currently doing whole30 and it’s my go to breakfast. So easy, great reheated. You can’t go wrong honestly. I highly recommend if you want something healthy and on the go.

    Reply
    1. Madeline
      January 4, 2021

      AW!! I love that so much thank you!

      Reply
  3. Rolande
    August 6, 2020

    Excellente recette. Merci

    Reply
    1. Madeline
      August 6, 2020

      Thank you!

      Reply
  4. Alison
    November 13, 2019

    If I wanted to add cheese what would work best with this? And would you mix it in before you baked it? Thanks!

    Reply

Welcome

Hi, I’m Madeline – food blogger and recipe developer based just outside Philadelphia. Join me for simple, comforting recipes designed for the whole family. Turn on your favorite playlist or podcast, and let’s get to cooking!

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