By Wendy Stoltz / Last Modified On July 31, 2023

This gluten-free breakfast casserole is simple to make, and you can use your favorite breakfast sausage, ham, or bacon to make it exactly the way you want. Perfect for meal prep and great for a crowd for a holiday breakfast or brunch. 

Instructions for making it the night before are included, so when you have guests over for the festive season or holiday, you can make this casserole dish to feed a crowd. It helps to save time in the morning, and you can customize it according to everyone's taste.

If you love breakfast casseroles, you need to make this gluten-free French toast casserole, Paleo breakfast casserole, or try these gluten-free breakfast recipes. If you prefer something with a dollop of salsa, make this huevos rancheros casserole.

A great casserole for a Thanksgiving side is this gluten-free sweet potato casserole recipe or this gluten-free green bean casserole that's simple to make and customizable to fit your taste buds.

GLUTEN-FREE BREAKFAST CASSEROLE RECIPE

If you like meal prep or you're feeding a crowd, you'll want to make this gluten-free breakfast casserole dish recipe. It's super simple to make, and it makes twelve good size servings. You can use bacon, ham, or sausage, or you can leave it out for a vegetarian version.

We like to make this gluten-free breakfast casserole when we have guests over or as a holiday breakfast for Thanksgiving and Christmas. We also will bake one up if we're going camping and reheat the leftovers over the camp stove.

WHY YOU’RE GOING TO LOVE THIS GLUTEN-FREE BREAKFAST CASSEROLE

Make it ahead of time - You can make this egg bake the night before and bake it the next morning.

Serves a crowd - If you are expecting a lot of guests during the holiday season, you can create this casserole. It feeds up to 12 people at a time.

Customize it to your liking - You can change up the protein, omit it and make a vegetarian casserole. It's totally customizable to your taste and liking.

INGREDIENTS IN GLUTEN-FREE BREAKFAST CASSEROLE

Protein - Breakfast sausage, ham, or bacon can be used. Pork sausage also works well. But check the pork sausage you use is gluten-free for your breakfast casserole. 

Hash browns - You can make your own hash browns from scratch or use frozen hash brown potatoes. You can use hash browns from frozen, but I suggest you thaw them and drain off excess liquid.

Cheese - I've used shredded Cheddar cheese, but you can use a cheese that melts well, which usually has higher fat and moisture in it, like mozzarella or Gouda.

Green onions - I like to add green onions for flavor, color, and texture to this breakfast casserole.

Eggs - Make sure your eggs are at room temperature.

Milk - I used full cream milk, but you can use a milk of your choice.

Seasoning - Salt and Pepper to taste.

EQUIPMENT NEEDED FOR THIS GLUTEN-FREE BREAKFAST CASSEROLE

Mixing bowls - These Pyrex mixing bowls come in handy.

Baking dish - Use a 9x13 baking dish.

If you have any questions about making gluten-free breakfast casserole, please leave a comment and we will get back to you as soon as possible.

HOW TO MAKE A GLUTEN-FREE BREAKFAST CASSEROLE

1. In a medium frying pan over medium heat, cook breakfast sausage. Use your spoon or spatula to break the sausage into pieces as it cooks. Once it’s cooked and no pink remains, turn off the heat, and remove the pan from the burner. Add the thawed hash browns, cheese, crumbled cooked breakfast sausage, and diced green onions to a large mixing bowl.
2. Stir to combine. The cheese might start to melt a little, but that's okay.
3. Pour the sausage and hash brown mixture into your prepared baking dish and spread it until it's evenly distributed.
4. In the same large mixing bowl, whisk the eggs with the milk, salt, and pepper.
5. Pour the egg mixture over the sausage and hash brown mixture. The egg mixture will start to sink into the hash brown mixture. No need to stir it.
6. Bake for one hour, uncovered or until the center is set and the edges are brown. Remove from the oven and let the breakfast casserole sit for 10-15 minutes before serving. Store leftovers covered in the refrigerator for up to 3 days. Reheat before serving.

These numbered steps match the numbered photos above and are for illustration purposes. For the complete list of ingredients and instructions for this gluten-free breakfast casserole, please see the complete recipe below.

TIPS FOR MAKING THE BEST GLUTEN-FREE BREAKFAST CASSEROLE

Liquid - With any casserole, any excess liquid will make it soggy. So be sure to thaw the hash brown potatoes and drain off excess liquid prior to using it. You can make your own hash brown potatoes if you prefer.

Salt - Depending on if you add in other ingredients. Check which ingredients already have added salt and then adjust the salt accordingly.

Check ingredient labels - Be sure to check the labels of the ingredients you use to make sure they are gluten-free. Particularly the sausages.

CAN I MAKE THIS GLUTEN-FREE BREAKFAST CASSEROLE AHEAD OF TIME? 

You can prepare this egg casserole the night before and bake it the next morning. Simply prepare it as directed, but instead of baking it, cover it with plastic wrap or foil and place it in the refrigerator. When you're ready to bake it, pull it out of the refrigerator and bring it to room temperature. Pre-heat your oven. Bake it for one hour, or until the center is set.

CAN YOU REFRIGERATE THIS GLUTEN-FREE BREAKFAST CASSEROLE?

Yes, you can make the egg casserole up until the step prior to baking it in the oven. You can then keep it in the refrigerator covered in plastic wrap for under 24 hours.

SHOULD YOU COVER GF BREAKFAST CASSEROLE WHEN BAKING?

No, you don't need to cover it. 

WHAT CAN I SUBSTITUTE IN THIS GLUTEN-FREE BREAKFAST CASSEROLE?

Vegetarian - You can make this gf breakfast casserole without the protein to make it vegetarian. 

CAN YOU FREEZE A GLUTEN-FREE BREAKFAST CASSEROLE?

Yes, you can freeze a gluten-free breakfast casserole. To freeze a casserole, you need to prepare the recipe as directed, but don't bake it. Cover the pan with plastic wrap and then foil and freeze for up to 3 months. When you're ready to bake your gf breakfast casserole, pull it out of the freezer and allow it to thaw overnight in the refrigerator. Let it come to room temperature before pre-heating your oven then bake it as directed.

HOW LONG CAN A GF BREAKFAST CASSEROLE SIT IN THE FRIDGE BEFORE BAKING?

You can place it in the fridge for under 24 hours, others have left it in the refrigerator for 48 hours, but I have not tested it.

MORE GLUTEN-FREE BREAKFAST RECIPES:

These recipes make gluten-free breakfast time great! Give them a go!

• Gluten-Free Blueberry Scones
• Gluten-Free Pancakes
• Gluten-Free Waffles
• Gluten-Free Cinnamon Rolls

Continue to Content

Yield: 12 servings

Gluten-Free Breakfast Casserole

Print

This gluten-free breakfast casserole is simple to make, and you can use your favorite breakfast sausage, ham, or bacon to make it exactly the way you want. Perfect for meal prep and great for a crowd for a holiday breakfast or brunch. 

Prep Time 10 minutes

Cook Time 1 hour

Additional Time 15 minutes

Total Time 1 hour 25 minutes

Ingredients

• 1 lb. ground breakfast sausage
• 20 oz. frozen hash browns (about 4 cups), thawed
• 2 cups shredded cheddar cheese
• ¼ cup diced green onion
• 12 eggs
• 1 cup milk
• 1 teaspoon salt
• 1 teaspoon ground black pepper

Instructions

1. Preheat oven to 350 degrees F. Spray a 9x13-inch baking dish with cooking spray; set aside.
2. In a medium frying pan over medium heat, cook breakfast sausage. Use your spoon or spatula to break the sausage into pieces as it cooks. Once it’s cooked and no pink remains, turn off the heat, and remove the pan from the burner.
3. Add the thawed hash browns, cheese, crumbled cooked breakfast sausage, and diced green onions to a large mixing bowl. Stir to combine. The cheese may start to melt, but don’t worry.
4. Pour the sausage and hashbrown mixture into your prepared baking dish and spread it until its evenly distributed.
5. In the same large mixing bowl, whisk the eggs with the milk, salt, and pepper.
6. Pour the egg mixture over the sausage and hashbrown mixture. The egg mixture will start to sink into the hash brown mixture. No need to stir it.
7. Bake for one hour, uncovered or until the center is set and the edges are brown.
8. Remove from the oven and let it sit for 10-15 minutes before serving.
9. Store leftovers covered in the refrigerator for up to 3 days. Reheat before serving

Notes

• To make this the night before: Prepare it as directed, but instead of baking it, cover it with plastic wrap or foil and place it in the refrigerator. When you're ready to bake it, pull it out of the refrigerator and bring it to room temperature. Pre-heat your oven. Bake it for one hour, or until the center is set.
• To freeze a casserole: Prepare the recipe as directed, but don't bake it. Cover the pan with plastic wrap and then foil and freeze for up to 3 months. When you're ready to bake your gf breakfast casserole, pull it out of the freezer and allow it to thaw overnight in the refrigerator. Let it come to room temperature before pre-heating your oven then bake it as directed.

Recommended Products

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  OXO Good Grips 11-Inch Balloon Whisk
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  Pyrex Smart Essentials 3-Piece Prepware Mixing Bowl Set, 1-Qt, 1.5-Qt ,and 2.5-Qt Glass Mixing Bowls, Dishwasher, Microwave and Freezer Safe
• 
  PYREX 3QT Glass Baking Dish with Blue Cover 9" x 13" (Pyrex)

Nutrition Information:

Yield:

12

Serving Size:

1 slice
Amount Per Serving: Calories: 385Total Fat: 27gSaturated Fat: 9gTrans Fat: 0gUnsaturated Fat: 16gCholesterol: 239mgSodium: 695mgCarbohydrates: 16gFiber: 2gSugar: 2gProtein: 20g

This nutrition info is based on the exact ingredients and brands that I used a the time. It may not be 100% accurate. Please check your ingredients nutrition labels.