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    Home » Breakfast & Brunch » Overnight Breakfast Casserole Recipe with sausage

    Published: Nov 8, 2019 · Modified: Nov 30, 2020 by Anna · This post may contain affiliate links, which means we make a small commission off items you purchase at no additional cost to you.

    Overnight Breakfast Casserole Recipe with sausage

    Jump to Recipe Jump to Video Print Recipe
    A white casserole dish filled with sausage breakfast casserole.

    This easy Overnight Breakfast Casserole is a family recipe (made WITHOUT bread) that is prepped the night before and baked in the morning - perfect for Christmas morning or any brunch! 

    Breakfast casserole in a glass dish.

    This easy Overnight Breakfast Casserole recipe has been in our family for decades, courtesy of my mother-in-law, Cathy. It's a staple at every holiday brunch.

    This decadent egg bake is RICH but super tasty. Filled with savory breakfast sausage, eggs, extra sharp cheddar cheese, loads of mushrooms, savory onion, crunchy green pepper and a hint of garlic, you're guaranteed to leave the table with full bellies and satisfied smiles.

    Jump to:
    • Why this recipe works
    • Ingredients
    • Instructions
    • FAQs
    • Serving suggestions
    • More breakfast casserole recipes
    • Recipe

    Why this recipe works

    • It came from one of those community, crowd-sourced cookbooks that were sold as fundraisers for decades. Some of the best, time-tested recipes come from those gems.
    • It's prepped the night before and can be immediately baked in the morning so you can enjoy that extra cup of coffee in peace.
    • Many egg bakes are made with bread, but not this one! This recipe is a great option for your gluten-free friends and family (use a gluten-free breakfast sausage and skip the cream of mushroom soup).

    Ingredients

    This egg bake contains many of the typical breakfast ingredients, including:

    • sausage - My go-to is Jimmy Dean bulk breakfast sausage. It's reliable and easy to find.
    • eggs - I've always used large eggs for this recipe.
    • cheese - We're big fans of extra sharp cheddar cheese but feel free to swap in sharp or mild cheddar or even a mix of all of them.

    Note: There is also an easy, creamy mushroom sauce that can be drizzled on top of the casserole. The instructions are in the recipe card. It's totally optional but highly recommended!!

    Casserole ingredients including eggs, sausage and cheese

    Instructions

    This dish comes together quickly and can be completely assembled the night before.

    Step by step photos of making an overnight breakfast casserole.

    Crack all of the eggs into the casserole dish being careful to keep the yolks intact. Drizzle with cream.

    Step by step photos of making an overnight breakfast casserole.

    Brown sausage and saute onions, peppers and mushrooms. Layer with cheese on top of eggs in casserole dish.

    Once morning rolls around, all you need to do is pop the casserole in the oven an hour before guests arrive. If you made the sauce the night before, simply reheat it gently on the stove or microwave.

    FAQs

    Can I make this breakfast casserole gluten-free?


    Because there is no bread in this breakfast casserole recipe, it's a great option to serve guests who have gluten sensitivities. Just be sure to use a gluten-free breakfast sausage and a gluten-free cream of mushroom soup if serving the mushroom sauce with the casserole.

    Do I have to make this the night before or can I make it in the morning?


    Either way works great!

    Breakfast Casserole in casserole dish with one piece removed.

    Serving suggestions

    This Overnight Breakfast Casserole is the centerpiece of any brunch, but here are a few (mostly) make-ahead ideas to round out your menu:

    Baked Goods:

    • These Caramel Apple Rolls can be prepped the night before and simply baked into warm gooey goodness in the morning.
    • Short on time and can't do any morning baking? Make these Blueberry & Lemon Poppy Seed Muffins the day before your brunch. Keep them loosely covered until you're ready to serve them.
    • No brunch is complete at our house without my Grandma's Sour Cream Coffee Cake recipe. (The cinnamon streusel swirl is the best part!)

    Side Dishes:

    • Don't forget your veggies! This gorgeous Arugula Salad - with feta cheese and roasted grapes - makes eating your greens taste delicious.
    • Love savory? You'll definitely want to add this Antipasto Salad to your brunch menu.
    • Add a little wow factor to your typical fruit plate with our quick and easy Fruit Salad with an irresistible lime-mint syrup.

    Dessert Recipes: 

    • Who can refuse this dessert mashup of carrot cake and cheesecake? You get the best of both worlds with our Carrot Cake Cheesecake Bars.
    • Feeling fancy? This Panna Cotta recipe is made with real vanilla bean and never fail to impress guests. (But they are soooo easy and are made in advance.)
    • It's hard to turn down a lemon bar, but ours include tropical coconut to give these Lemon Bars an edge over all the rest.

    Drinks:

    • Brunch was made for bubbles! Some of our best bubbly recipes are these Prosecco Cocktails made with grapefruit juice and ginger liqueur and these Breakfast Mimosas made with tequila.
    • Better yet, let guests serve themselves. Set up a DIY Bloody Mary Bar for guests to create their own perfect cocktail.
    A plate of food with a fork and knife, with Casserole and Cheese.

    More breakfast casserole recipes

    • Breakfast Hash Brown Bake - Garnish with Lemon
    • Low Carb Breakfast Casseroles - Kalyn's Kitchen
    • Bacon, Tomato and Cheese Strata - Garnish with Lemon
    • Baked Egg, Broccoli and Feta Breakfast Casserole - Cookin' Canuck
    • Sausage and Pepper Jack Egg Bake - Garnish with Lemon

    Don't miss any of our delicious breakfast and brunch recipes!

    Recipe

    Fireman's Overnight Breakfast Casserole

    Garnish With Lemon
    This easy Overnight Breakfast Casserole is loaded with sausage, eggs, cheese and veggies and is refrigerated overnight. Perfect for Christmas morning or any brunch menu!
    4.63 from 78 votes
    Print Recipe Pin Recipe
    Prep Time 8 hrs
    Cook Time 1 hr
    Total Time 9 hrs
    Course Breakfast & Brunch
    Cuisine American
    Servings 12 servings
    Calories 460 kcal
    Prevent your screen from going dark

    Ingredients
      

    Casserole:

    • 1 pound ground pork sausage I used Jimmy Dean
    • 8 ounces fresh sliced mushrooms
    • 1 large onion chopped
    • 1 green pepper chopped
    • salt and pepper
    • 12 eggs
    • 1 cup whipping cream
    • 1 pound shredded extra sharp cheddar cheese

    Optional Mushroom Sauce:

    • 1 10.5-oz can condensed cream of mushroom soup
    • ½ cup milk
    • ¼ teaspoon garlic powder

    Instructions
     

    Casserole:

    • Lightly grease a 9 x 13 baking dish. Set aside.
    • Brown sausage in a skillet over medium heat. Drain meat. Add mushrooms, onion and green pepper to the same skillet. Stir and cook over medium heat for 6-7 minutes. Add salt and pepper to taste. Remove from heat.
    • Break eggs into baking dish keeping the yolks intact. Do your best to evenly distribute the egg yolks around the pan. Poke a hole in each of the yolks with a toothpick. Pour cream over eggs and top with ½ of cheese.
    • Using a slotted spoon, add sausage mixture to the baking dish. Top with remaining cheese, cover with foil and refrigerate overnight.
    • When ready to bake, preheat oven to 350 degrees. Cook covered for 30 minutes and uncovered for another 30 minutes.

    Mushroom sauce:

    • Combine soup, milk and garlic powder in a small saucepan and cook until heated through. Add additional milk to reach desired consistency. Season to taste with salt and pepper. Serve with breakfast casserole.

    VIDEO

    Nutrition

    Serving: 1cupCalories: 460kcalCarbohydrates: 8gProtein: 25gFat: 37gSaturated Fat: 17gPolyunsaturated Fat: 16gTrans Fat: 1gCholesterol: 280mgSodium: 903mgFiber: 1gSugar: 3g

    Nutrition info not guaranteed to be accurate.

    Did you make this recipe?Tag us on Instagram or leave a comment!

    No brunch is complete without this easy Overnight Breakfast Casserole recipe. Made with sausage, eggs, cheese and veggies (and no bread), this egg casserole is refrigerated overnight and baked in the morning. Perfect for Christmas or any holiday!

    « Oven Roasted Sweet Potato Cubes
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    About Anna

    Hi, I’m Anna, a former corporate communications nerd turned food fanatic. Turns out I like cooking for others A LOT more than explaining HR policies to them. C’mon over!

    Reader Interactions

    Comments

    1. Molly Anderson says

      January 04, 2023 at 5:22 pm

      5 stars
      I just made this for me and my husband. I’m trying to incorporate more protein in my diet and it definitely filled me up! I did about 4.5 oz of sharp cheddar, 5 oz colby jack, and then 5 oz mozzarella on top of the sausage mix (I was low on cheeses lol) instead of just sharp cheddar. It turned out so yummy and so flavorful. Great recipe!!

      Reply
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