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Croissant Breakfast Casserole

Simple but sophisticated, this Croissant Breakfast Casserole with Prosciutto and Tomatoes is perfect for breakfast and brunch. Made with just 5 ingredients, these skillet baked eggs come together in just 20 minutes but with a presentation nice enough to impress any guest.

A blue bowl of croissant breakfast casserole with prosciutto

An Easy Brunch Casserole

Is there anything better than a recipe that’s not only easy to make and great for busy days, but also great for guests? That’s what we are going for with this croissant breakfast casserole with prosciutto!

With 5 ingredients, it can be whipped up quickly and it’s ready in just 20 minutes. The ingredients are simple – tomatoes, prosciutto, eggs, and cheese – but maybe a bit “fancier” than you might normally make for breakfast. (Prosciutto just seems classier to me than bacon or ham!) That means it’s perfect for everyday mornings when you just want something more than your basic omelette or oatmeal, but equally as perfect for a nice breakfast or brunch with friends.

Skillet baked eggs are also a great way to cook perfectly cook several eggs at a time, without scrambling them or making an omelette. I know that when I’m cooking breakfast for several people I don’t always want to be at the stove individually frying eggs, so this is a great alternative. Just a few minutes to assemble the casserole and hands-off until it’s ready!

Croissant breakfast casserole in a cast iron skillet

What You’ll Need

These skillet baked eggs are made with just 5 ingredients! Simple and easy with a presentation that makes it perfect for brunch guests.

  • Croissants – Croissants fresh from the bakery are the best option here!
  • Eggs – The eggs get cooked to perfection during baking.
  • Cherry tomatoes – I use yellow cherry tomatoes, which are little sweeter than the popular red variety, but red works just fine.
  • Prosciutto – A salty and well-seasoned Italian classic! I think using prosciutto gives this dish a fancy flair.
  • Thyme sprigs – Fresh thyme adds flavor and a pop of color.
  • Sea salt and black pepper – Added to taste.
Croissants, parmesan cheese, eggs, yellow cherry tomatoes and prosciutto laid out on a table

How to Make Croissant Breakfast Casserole

The great thing about these skillet baked eggs is how easy they are to prepare! You just need about 5 minutes to assemble the casserole and 10 to 20 minutes of bake time before breakfast is served.

  1. Assemble the breakfast casserole. Preheat the oven to 375 F. Cut the croissant in half and place in the cast iron pan, then crack the eggs around the croissants. Add the cherry tomatoes then top with parmesan all over. Finish by tucking in the prosciutto and arranging thyme.
  2. Bake. Place on the middle oven rack and bake for 10 to 20 minutes. The baking time will vary based on how you prefer your eggs.
  3. Serve. Top with salt and pepper and serve immediately.

How Long Does It Take To Cook Baked Eggs?

The cooking time for your skillet baked eggs will depend on how you like your eggs. For a runny yolk, you’ll only need to bake this for about 10 minutes and can remove the pan from the oven as soon as the whites have set. For a firmer yolk, allow a few extra minutes. I’ve found that even for fully cooked eggs with a hard yolk, you only need a maximum of 20 minutes.

I recommend to start keeping an eye on your eggs at around the 8 minute mark, especially if you like a soft yolk.

Overhead view of a croissant breakfast casserole in a skillet ready to be baked

Breakfast Casserole Variation Ideas

If you like to get creative with your recipes or maybe you’re just not a fan of one of the listed ingredients, here are a few easy variations on these baked eggs!

  • Swap the prosciutto. If you don’t have prosciutto on hand, you can easily replace it with country ham or bacon bits.
  • Add more cheese. While the flavors of prosciutto and parmesan pair together well, you can also use a soft gouda, gruyere, mozzarella, or cheddar in this recipe.
  • Use your favorite herbs. Any fresh herbs, or even dried herbs, will work with these baked eggs so feel free to adjust according to your flavor preferences.

Serving Suggestions

Enjoy your breakfast skillet bake immediately after removing it from the oven. Top with salt and pepper and enjoy! The warm, soft yolks (if you like your eggs that way) are perfect for dipping the croissant in.

One thing I love about this easy breakfast bake is that there’s no need to make any additional dishes – with the croissant, eggs, and prosciutto it’s a full breakfast in one dish. Add a cup of coffee or a mimosa and you have the perfect breakfast or brunch!

Tongs removing a serving of croissant breakfast casserole from the skillet

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How to Store Leftovers

This croissant breakfast casserole with prosciutto is best when served immediately. This is especially true if you like your eggs undercooked. That said, you can refrigerate this skillet breakfast bake for up to 3 days. Store in an airtight container and reheat completely in the oven, or airfryer. The microwave works, but can make for rubbery croissants if you over do it..

Can I Freeze This Skillet Baked Egg Casserole?

This is one breakfast casserole that should not be frozen. It’s best to enjoy it fresh every time. The croissant will not taste good after defrosting and soft eggs do not freeze well.

Luckily, this dish is easy enough to make that whipping it up fresh is no problem at all.

If you like this recipe, please give it a FIVE STAR rating and share with your friends!

Tongs removing a serving of croissant breakfast casserole from the skillet

Croissant Breakfast Casserole

Yield: 4 servings
Prep Time: 5 minutes
Cook Time: 10 minutes
Total Time: 15 minutes

Simple but sophisticated, this Croissant Breakfast Casserole with Prosciutto and Tomatoes is perfect for breakfast and brunch. Made with just 5 ingredients, these skillet baked eggs come together in just 20 minutes but with a presentation nice enough to impress any guest.


  • 4 croissants, halved
  • 4 eggs
  • 8 yellow cherry tomatoes, halved
  • 1 cup parmesan cheese, grated
  • 4 slices prosciutto
  • 4 fresh thyme sprigs
  • Sea salt and black pepper


    1. Preheat the oven to 375 F / 190 C.
    2. Lightly oil the bottom and sides of a standard 10.25" cast iron pan.
    3. Cut croissants in half and arrange around the bottom of the cast iron pan. Crack eggs and drop directly onto croissants, spacing them out as needed. Add cherry tomatoes and parmesan cheese, then tuck in the prosciutto and arrange thyme sprigs on top.
    4. Place cast iron on a baking tray and bake in the middle of the oven for about 10 - 20
      minutes depending on how you want your eggs.
    5. Remove and serve immediately with sea salt and fresh grounded pepper.
Nutrition Information:
Yield: 4 Serving Size: 1
Amount Per Serving: Calories: 530Total Fat: 30gSaturated Fat: 14gTrans Fat: 0gUnsaturated Fat: 12gCholesterol: 271mgSodium: 1699mgCarbohydrates: 36gFiber: 2gSugar: 9gProtein: 27g

Nutrition information is automatically calculated by Nutritionix and is for general information purposes only. For the most accurate information, calculate using your select brands and exact measurements.

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