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    Home ยป Recipes ยป Breakfast

    Easy Sausage, Spinach, and Cheddar Breakfast Casserole

    Modified: Oct 13, 2022 ยท Published: Nov 11, 2019 ยท by Amy Casey ยท This post may contain affiliate links ยท 16 Comments

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    Jump to Recipe
    slice of sausage breakfast casserole

    Easy Sausage, Spinach and Cheddar Breakfast Casserole is a cozy and perfect dish to serve a hungry breakfast crowd.

    slice of sausage breakfast casserole

    This past weekend, we had an awesome time with some overnight guests. My sister and her husband were in town. They joined us at the beach for a fun couple of days of eating, drinking, and socializing.

    blueberry muffin with crumb topping

    I like to make a hearty breakfast for out-of-town guests. I whipped up my Easy Sausage, Spinach, and Cheddar Breakfast Casserole early on Saturday morning. Along with crumb topped blueberry muffins, breakfast was a hit. I love, love, love this casserole! It is so versatile. Adapt it to use whatever breakfast meats, veggies, and cheese you have hand.

    ingredients for a breakfast casserole
    Jump to:
    • ingredients
    • recipe details
    • can you make a breakfast casserole in advance?
    • why is my breakfast casserole runny?
    • variations
    • more breakfast recipes
    • just one more thing
    • Recipe

    ingredients

    The base of the breakfast casserole is the same. Change up the "filling" ingredients with your favorites. This combo of ingredients is my go~to for an easy sausage breakfast casserole.

    • salted butter
    • breakfast sausage
    • spinach
    • large eggs
    • whole milk
    • Dijon mustard
    • baking powder
    • kosher salt
    • pepper
    • cheddar cheese

    recipe details

    Just some sauteing and mixing is all that is needed for the breakfast casserole. First I sauté the sausage until it has some crispy bits and cooked through. To streamline the prep, stir in the spinach just before the sausage is done cooking.

    Next whisk the eggs along with milk, some mustard for a little kick, baking soda, kosher salt and pepper.

    Now for the easy part, combine the cooked sausage and spinach with the egg mixture and the shredded cheddar cheese. Pour into a buttered baking dish and cook until just set and puffed up in the middle.

    Wasn't that easy? Let's eat!

    breakfast casserole with sausage and spianch

    can you make a breakfast casserole in advance?

    Absolutely! That is why I love breakfast casseroles. If you are anything like me, I'm blurry eyed in the morning. But coffee first. I need all the help I can get.

    After baking, completely cool, cover with plastic wrap. and store in the refrigerator for up to 3 days. When you would like a serve it, just reheat a piece on 60% power in the microwave for about 1 minute.

    Alternately, you can prep the ingredients the day or night before assemble the casserole in the morning. Brown the breakfast sausage, sauté the spinach and grate the cheddar cheese in advance. Store the ingredients in the refrigerator, and they will be ready to go the morning you make the casserole. Just combine all the ingredients and in about 30 minutes breakfast is served.

    why is my breakfast casserole runny?

    It is important to precook the vegetables before adding them along with the other ingredients for a breakfast casserole. Vegetables contain a high percentage of water. When raw veggies cook in the casserole, they release the water and make your breakfast too liquidy. Giving the vegetables a quick sauté will solve this problem.

    slice of breakfast casserole with sausage and cheese

    variations

    The breakfast casserole has a few basic ingredients (which you most likely have on hand) including eggs, milk, Dijon mustard, baking soda, kosher salt and pepper. The recipe is very forgiving. Change up the add-in ingredients to make it include your favorites. Some options include

    • cooked and crumbled bacon
    • diced ham
    • diced Canadian bacon
    • Swiss, pepper jack or herb goat cheese
    • steamed broccoli or asparagus
    • sautéed mushrooms or zucchini
    • finely diced fresh tomatoes.
    egg dish with ham, onion, red pepper, zucchini and cheddar cheese

    more breakfast recipes

    • Egg Casserole with Croutons and Sausage
    • Flaky Blueberry and Cheese Puff Pastry Danish
    • Super Easy Ham and Egg Cups
    • Fruit and Yogurt Freezer Smoothies
    • Great Aunt Rose's Sour Cream Pound Cake
    • Easy Baked Frittata

    just one more thing

    If you make this easy breakfast casserole recipe, I’d love hearing from you all. Be sure to leave a comment and/or give this recipe a rating ~ I do my best to reply to all your comments. And snap a photo to post to Instagram. I’ll add the photos to my Insta stories as I love seeing all your creations.

    breakfast casserole with ham, onions, cheddar, red pepper and zucchini
    Print

    Recipe

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    breakfast casserole with sausage, spinach and cheddar cheese

    Easy Sausage, Spinach and Cheddar Breakfast Casserole


    5 Stars 4 Stars 3 Stars 2 Stars 1 Star

    5 from 1 review

    • Author: Amy Casey
    • Total Time: 1 hour
    • Yield: 8 1x
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    Description

    Easy Sausage, Spinach and Cheddar Breakfast Casserole is a cozy and perfect dish to feed a hungry breakfast crowd.


    Ingredients

    Units Scale
    • Butter for greasing the baking dish
    • 16 ounces breakfast sausage
    • 8 ounces baby spinach
    • 10 large eggs
    • ยฝ cup whole milk
    • 1 teaspoon Dijon mustard
    • ยฝ teaspoon baking powder
    • 1 teaspoon kosher salt
    • ยฝ teaspoon freshly ground pepper
    • 2 cups grated sharp cheddar cheese

    Instructions

    1. Preheat oven to 375 degrees. Grease a 2 quart baking dish with butter. Set aside.
    2. In a large sauté pan over medium heat, add the breakfast sausage. Sauté the sausage and break it up into little pieces as it cooks. Continue cooking for 8 to 10 minutes. The sausage should be browned and crispy in spots and cooked through. Stir in the spinach and sauté until wilted. Remove from pan to a bowl and set aside.
    3. In a large bowl, add the eggs and whisk until combined. Whisk in the milk, mustard, baking powder, salt and pepper until thoroughly combined.
    4. Stir in the cooked sausage, spinach and cheddar cheese.
    5. Pour the mixture into the prepared baking dish.
    6. Bake for 25 to 30 minutes or until the center is just set.
    7. Serve warm or at room temperature.

    Notes

    Adapt the recipe to include your favorite breakfast casserole ingredients. Some delicious options include cooked and crumbled bacon, diced ham, Swiss, pepper jack or goat cheese, steamed broccoli or asparagus, sauteed mushrooms or finely diced tomatoes (remove the seeds).

    • Prep Time: 15 minutes
    • Cook Time: 45 minutes
    • Category: Breakfast
    • Method: Stove top and oven
    • Cuisine: American

    Nutrition

    • Serving Size: โ…› of dish
    • Calories: 364
    • Sugar: 1.6 g
    • Sodium: 908 mg
    • Fat: 28.3 g
    • Saturated Fat: 12.1 g
    • Unsaturated Fat: 0 g
    • Trans Fat: 0 g
    • Carbohydrates: 2.8 g
    • Fiber: 0.7 g
    • Protein: 24.5 g
    • Cholesterol: 299 mg

    Did you make this recipe?

    Tag @amycaseycooks on Instagram so we can all admire your work 🙂

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    1. Bea

      October 30, 2024 at 6:51 pm

      can you add sausage and bacon to this casserole?

      Reply
      • Amy Casey

        October 31, 2024 at 8:37 am

        Definitely Bea! Bacon would be a delicious addition to the breakfast casserole. This is a recipe a make all the time ๐Ÿ™‚

        Reply
    2. KASEY

      May 10, 2024 at 1:11 pm

      Amy,
      This recipe is SO delicious! It's a weekly staple in my house.
      Question- have you tried making this recipe for egg muffins? I'd love to switch up the cooking style.
      I read through this blog post to see if you had mentioned that, but I didn't find anything.
      Thank you!

      Reply
      • Amy Casey

        May 10, 2024 at 2:15 pm

        I'm so glad you enjoy my recipe Kasey! I haven't tried making it to make egg muffins. But it would most likely work. Just make sure that you use a nonstick muffin pan and coat it well with cooking spray. This recipe is similar ~ Scrambled Egg Muffins ~ and they come out beautifully. LMK how they turn out for you. ๐Ÿ™‚

        Reply
        • KASEY

          May 25, 2024 at 1:35 pm

          It worked! I kept the same temperature & oven time, and they turned out great.

          Thank you for the reply!

          Reply
          • Amy Casey

            May 28, 2024 at 8:55 am

            You're so welcome Kasey!! I've made this casserole for years and it's always a favorite. ๐Ÿ™‚

            Reply
    3. Cheryl Beck

      November 17, 2023 at 11:23 pm

      Can you make it ahead of time

      Reply
      • Amy Casey

        November 19, 2023 at 3:27 pm

        Cheryl ~ Yes! This breakfast can be made in advance. Reheat in the microwave on 60% power at 30 second intervals. Or heat covered in a 350 degree F oven for 1 -15 minutes

        Reply
    4. Trish

      February 11, 2022 at 11:00 pm

      Hi Casey, have you made this in advance? If so, what are your recommendations?
      Sounds great.
      Trish

      Reply
    5. Tommy

      January 12, 2020 at 9:39 am

      This recipe is amazing! Easy storage and a filling, healthy breakfast! Thank you, Amy!

      Reply
      • Amy Casey

        January 12, 2020 at 2:27 pm

        So glad you enjoyed the recipe Tommy! It's a favorite.

        Reply

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    Personal chef Amy Casey.

    I'm Amy Casey and welcome to Amy Casey Cooks! I have a lifelong love of food and 20 years experience as a personal chef while cooking for over 300 clients. I share my tested, tried and true easy recipes, cooking and kitchen tips, and videos so you can make restaurant quality meals in your own kitchen. More about my culinary journey.

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