World’s Best Breakfast Casserole

The world's best breakfast casserole! {by:}Mmmmm, breakfast food. Literally, I could eat breakfast three meals a day. I know I’ve mentioned this, but we have breakfast for dinner at least once a week! The awesome thing about breakfast foods (aside from the deliciousness factor) is that they are so affordable. Whenever I crave breakfast casserole, this is the recipe I go straight to. It is simple, but it just works. No other breakfast casserole I’ve tried or tasted can compare. Yesterday we made it for Father’s Day breakfast and it was a hit, as always. What do you say we get down to the nitty gritty details?
Here’s what you need:

24 oz precooked sausage

10 eggs
1 cup sour cream (I use lite)
1 onion
1 green pepper
1 red pepper
16 oz mushrooms
2 cups grated cheese
Preheat oven to 350 degrees. Chop sausage, onion, peppers and mushrooms. As you are chopping these, you might think “wow, this is a lot of sausage,” “wow, this is a lot of onion” or “wow, this is a lot of mushrooms”. The answer is, yes. There is a lot of STUFF in this casserole. I love that about it. It doesn’t taste “eggy” it tastes delicious. Now, back to business. In a separate bowl mix eggs, sour cream and cheese. Once egg mixture is thoroughly mixed add in sausage and veggies and spread out into a greased 9×13 casserole dish. Bake for 30-45 minutes or until cooked through. Most importantly, enjoy! 
If you liked this post you will also love Biscuits from Heaven and  Homemade No Bake Granola Bars!
  • Cristina Carrera

    This definitely does look like the world’s best. I’ve done similar casseroles.. they’re always good.. but I’ve never added sour cream. I bet that makes it extra awesome.

    • prettyprovidence

      It really does add so much flavor! Thanks for commenting Cristina! Made my day :)

  • Kaylynn Young

    YUM! You could also use Greek yogurt instead of sour cream …. mmmm… I think I need to go make breakfast. Must be hungry!

    • prettyprovidence

      Great idea! I always have Greek yogurt on hand these days :)

  • Kari

    This looks so delicious! Thanks so much for sharing :)

    • prettyprovidence

      Of course :)!

  • Katie Clark

    I loveeee breakfast casseroles, and this looks amazing (esp because I love mushrooms.) Definitely pinning this for future use.

    • prettyprovidence

      I love mushrooms too! They add so much, you’ll love it!

  • Kelli Jordan


    • prettyprovidence

      Haha you totally just made my morning!!’ I hope you LOVE it as much as I do!!!

  • Jess

    Could you split this recipe up and freeze the other half for another time?

    • prettyprovidence

      I’m not sure! I have never tried freezing it before, in sure you could find some tips online! Sometimes I do half the recipe though and just bake it in a smaller pan!

  • Beckster45

    Could you add hashbrowns? and if so about how much would you think could be added?

    • prettyprovidence

      Yes you can! I just add as many as will fit in my pan. Sometimes (depending on the hash brown) you will need to cook your mixture a little longer, just test to see!

  • Kathryn

    I am hoping to make this to bring to a party tomorrow morning. How many servings would you say it has? And has anyone ever cooked it the night before and heated it up in the morning?

    • prettyprovidence

      The servings would depend on whether you were serving only this dish or there would be other sides as well. I usually cut it into 12 squares!

  • Tracy

    Can this be made the night before? I would like to prepare and or cook for the hubby when he goes to deer camp . He could cook it or just warm it up before they head out in the morning.

    • prettyprovidence

      We reheat our leftovers and eat them the next day! It’s not quite as good as right out of the oven (like most leftovers) but still really yummy!

    • prettyprovidence

      Ps. Best wife award!

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  • Mom of 5

    Just made this and it is delicious. I used a pkg of Hillshire Farms turkey kielbasa, diced, for the sausage and added a tsp of salt to the egg mixture. Other than that I followed the recipe exactly. Baked longer than it called for but I expected that. Probably just over an hour. I don’t think the kids would love it cause it’s really dense with veggies but I was looking for a low carb, high protein and high veggie breakfast for myself that I can heat up throughout the week and this fit the bill. Hopefully I enjoy it as much reheated!

  • Nashira

    OMG This was soooo goood! I halved the recipe to make myself breakfast for a week. Replaced the mushrooms with grated zucchini and added paprika and oregano. I used jerk sausage so it was a little bit spicy but…very awesome. I don’t think its gonna last the week…

    • Jessica @ Pretty Providence

      Oh my gosh those changes sound amazing!! Thanks so much for sharing and for coming back to report!!

  • anricca

    I needed a last minute breakfast/brunch casserole. I forgot I made the commitment of actually cooking. I googled and found your recipe. My contribution to the meal was the only empty bowl with people looking for more. FANTASTIC!!

    • Jessica @ Pretty Providence

      Ah yay!!! I’m so glad to know you loved it! Thank you for coming back to share your experience, you totally made my day!!

  • Gr8mona

    Is there a substitute for the eggs?

    • Jessica @ Pretty Providence

      Not that I know of, so sorry!

  • Kim

    Hi…just came across your recipe on Pinterest and plan to try it this weekend. When you say “precooked” sausage what are you referring to…like Eckrich or Hillshire Farms smoked sausage? I was thinking of using breakfast roll pork sausage as in most breakfast casseroles I have made (though that is not precooked).

    • Jessica @ Pretty Providence

      I just meant if it’s not pre cooked, you should cook it BEFORE you add it to the casserole! So any kind should work just fine!

      • Kim

        Thank you!

        • Jessica @ Pretty Providence

          You’re so welcome!

  • Jackie

    Is the sausage in this recipe ground sausage which you pre cook?

    • Jessica @ Pretty Providence

      Yes it is!