Herby Ham & Gruyère Breakfast Casserole Recipe on Food52 (2024)

Bake

by: Catherine Yoo

November24,2020

5

5 Ratings

  • Prep time 15 minutes
  • Cook time 1 hour
  • makes One 9- x 13-inch casserole dish

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Author Notes

Whenever the weather starts to get colder, I always think about the holidays and all the delicious, seasonal foods that come with them. Each holiday is special, but for me, the winter holidays are the best. I love being surrounded by my family—especially when we all get to cook and eat together. I can immediately picture juicy ham, gooey cheese, and some type of delicious carb.

My family always celebrates the holidays with a big baked ham and (of course) there are always lots of leftovers. This got me thinking: What’s the best way to use up all that leftover ham? (Besides the typical ham and cheese sandwich.) A breakfast-y (or brunch-y!) ham casserole.

Most casseroles tend to be very cheese-heavy and sometimes a little too rich for my taste. Usually I can only have a couple of bites, so I wanted to make a casserole that I could eat in its entirety (or, you know, share with my family).

I like to use cubes of brioche in mine because it adds flavor and texture to the dish without being overwhelming. My go-to bread is St Pierre’s Sliced Brioche Loaf because it's incredibly soft, fluffy, and just-the-right amount buttery. However, casseroles are best made with day-old bread or stale bread, so I toast my St Pierre brioche cubes in the oven so that you can feel the texture of the bread throughout the casserole; toasting also ensures they soak up the egg-milk mixture nicely.

If you love ham, cheese, and bread—but you still want to get your vegetables in (this one’s got lots of broccoli)—this is a breakfast casserole you’re going to want to make throughout the holiday season and beyond.

Catherine Yoo

Test Kitchen Notes

This recipe is shared in partnership with St Pierre, and was developed using their Sliced Brioche Loaf. —The Editors

  • Test Kitchen-Approved

What You'll Need

Ingredients
  • 1 St Pierre Sliced Brioche Loaf (about 1 pound), cut into large cubes
  • 2 tablespoonsunsalted butter
  • 4 medium shallots (about 6 ounces), thinly sliced
  • 8 fresh thyme sprigs, leaves only
  • 12 ouncessmoked boneless ham, diced
  • 12 ouncesbroccoli, cut into small florets
  • 2 cupswhole milk
  • 10 eggs
  • 1/2 teaspoonsmoked paprika
  • 1/2 teaspooncayenne
  • 1/4 teaspoonnutmeg
  • 1/4 teaspoonblack pepper
  • 1 medium tomato (about 7 ounces), diced
  • 1 cupfresh parsley, roughly chopped
  • 5 ouncescreamy Gouda, grated and divided
  • 5 ouncesGruyère, grated and divided
Directions
  1. Place the oven racks on the top 1/3 and 2/3 of the oven, and preheat to 300°F. Spread the brioche cubes amongst two sheet trays and toast for 10 minutes.
  2. Once the bread is out, move the top oven rack to the middle and increase the oven temperature to 350°F.
  3. In a large nonstick pan, melt the butter over medium-high heat. Add the shallots and thyme, and sauté until the edges turn brown, about 2 minutes. Mix in the ham and sauté for another 2 minutes. Then add the broccoli and cook for an additional 2 minutes. Set this mixture aside and let cool for about 5 minutes.
  4. In a large bowl, whisk together the milk, eggs, and spices. Set aside 1/2 cup of Gouda and 1/2 cup of Gruyère to top the casserole before baking. Once the egg-milk mixture is combined, add the tomato, parsley, cheeses, sautéed vegetables, and toasted brioche cubes into the large bowl. Lightly toss everything together.
  5. Spray non-stick oil on the casserole dish and pour the mixture into your greased casserole dish. Top the casserole with the reserved cheese and bake in the oven for about 40 minutes. Cool for at least 10 minutes before serving.

Tags:

  • Casserole/Gratin
  • American
  • Broccoli
  • Ham
  • Nutmeg
  • Paprika
  • Parsley
  • Shallot
  • Thyme
  • Tomato
  • Cheese
  • Egg

See what other Food52ers are saying.

  • Catherine Yoo

  • NXL

  • Shelley Frisch

  • Kathy

Popular on Food52

7 Reviews

NXL December 25, 2023

Didn't realize that this recipe was an ad for the bread or I probably would never have tried it. That said, the tomatoes and broccoli add a freshness that most breakfast casseroles lack. May be no need for ham? Any good quality country bread will work at half the cost. Took a good hour for prep, but I'm okay with that if music and wine are flowing!

Shelley F. April 18, 2023

Estimated prep time is absolutely ridiculous! It couldn't be done in 15 minutes even if you mise-en-placed all the ingredients in advance. Also, it is unclear if this is an overnight casserole - based on Ms. Yoo's comment that it can be placed in the refrigerator and baked later after the bread has soaked up the custard ingredients. I would have appreciated re-heat instructions if it is baked the day before.

Kathy April 18, 2023

I would not do this as an overnight deal. The texture is just right when baking right away and I believe you would lose that by leaving the bread soaking. The "custard" may separate as well. Would love to hear from someone who tried the overnight trick.

Kathy April 17, 2023

I like egg casseroles and this is the tastiest I've tried! The Gouda and Gruyere cheeses, plus finally using enough shallots to be effective, make the difference. You need a *really big* mixing bowl and a deep 9x13 pan. My only complaint is a common one for me - don't tell me the prep time is only 15 min. when you must cut up and toast a loaf of bread, dice ham and tomatoes, cut up broccoli, slice shallots, grate cheese, cut up a CUP of parsley, and whisk 10 eggs and milk together! The prep time is usually underestimated by at least half in recipes. This recipe is worth the time :)

Mery S. April 23, 2022

I bake and cook a lot and this looks delicious. I wanna make this for my friends for our staycation coming up. I wanna make it the night before we go away and bake it at our AirBNB. I assume this can be make ahead as I have make outher egg dishes ahead. Can you please confirm as I will not have a chance to test it out before we go. Thank you.
PS love your site. I wish I could buy some of the products you feature in Canada.

Catherine Y. April 24, 2022

Hi Mery,

Thank you so much for your kind words! Yes, this dish can be made ahead, kept in the fridge, and then baked in the oven at a later time! Hope you enjoy this dish as much as I had fun developing it!

Warmly,
Catherine

Catherine Y. April 24, 2022

Also, Lori, who has kindly and accurately mentioned in the questions part of this recipe, brings up a great point; “Just make sure your bread is good and dry. If the bread isn't fairly dry, you can end up with a mushy casserole, since you want it to sit overnight to soak up the custard.”

Herby Ham & Gruyère Breakfast Casserole Recipe on Food52 (2024)

FAQs

Why is my breakfast casserole soggy? ›

Pre-cook the veggies. Veggies are naturally watery. As they cook, they release that moisture. If they only cook in the casserole, all that extra moisture will also be IN your casserole.

How do you thicken breakfast casserole? ›

Make a cornstarch slurry for a fast and easy thickener.

Use one tablespoon of cornstarch per cup of liquid you would like to thicken. Stir out all the lumps. A few minutes before your casserole is done, add it a little at a time until you are happy with the thickness. Then, let the casserole finish baking.

How do you keep breakfast casserole from falling? ›

For a puffy egg casserole, you can prevent falling by cooking at a lower temperature, as with this recipe.

What is a breakfast casserole made of? ›

To make a breakfast casserole you beat some eggs, add milk and cheese, add cubed bread, add "mix-ins" like mushrooms, veggies, sausage, and herbs, put it in a casserole dish, and bake.

Why do you have to refrigerate breakfast casserole overnight? ›

The casserole is covered and refrigerated overnight to allow the liquid ingredients to be absorbed into the bread. This is a perishable mixture and should be cooked the morning or day after assembly. Bake in an oven set no lower than 325 °F. Most recipes suggest 350 °F.

How do you keep a casserole moist? ›

Pro Tip: Avoid Dry Casserole.

The best way to prevent it from drying out is to add a little bit of water, around ¼ cup, to the top of it. Allow the water to seep between the food and the sides of the baking dish. Cover with aluminum foil to seal in the moisture.

How do I know when my breakfast casserole is done? ›

How do you know when breakfast casserole is done? Just stick a knife into the center of your egg casserole recipe after 55 minutes of baking. If it comes out clean, your baked egg casserole is ready!

What ingredient is added to casseroles to thicken the dish? ›

The three main thickening agents for gravies are flour, cornflour and arrowroot. The first two are normally used in savoury dishes while arrowroot tends to be used in sweet dishes – that said, arrowroot will work in a savoury dish as it has no flavour.

How to make egg casserole not watery? ›

Be sure to drain ingredients well, squeezing out excess moisture whenever possible. Watery ingredients will create a watery egg bake. Season every layer to achieve a more flavorful egg bake.

Should you cook a casserole covered or uncovered? ›

Generally, casseroles with grains, rice or pasta that will cook during the baking process are usually covered, for at least part of the time. Casseroles made of cooked ingredients are usually baked uncovered. If you like a crisper, browner top, be sure the casserole is uncovered for at least part of the bake time.

How long should a casserole be in the oven? ›

The time a casserole takes to cook will vary from 2-2½ hours for chuck, blade and thick flank, up to 4 hours for shin, leg and neck. Pork cuts for braising and casseroling normally take 1½ hours, and lamb much the same.

Can breakfast casserole sit in the kitchen all night or should it be refrigerated? ›

At this point, you can either bake it right away or refrigerate the casserole overnight and for up to 24 hours. During this time, the flavors mingle together and the bread has a chance to soak up some of the liquid and flavor.

What is the main ingredient in a casserole? ›

In the United States, a casserole or hot dish is typically a baked food with three main components: pieces of meat (such as chicken or ground meat) or fish (such as tuna) or other protein (such as beans or tofu), various chopped or canned vegetables (such as green beans or peas), and a starchy binder (such as flour, ...

What are 5 components of a casserole? ›

Let's talk anatomy: A standard dinner casserole usually includes a protein, a starch, a vegetable, a sauce (or other binding ingredient), and cheese. But making a casserole is not an exact science, and you can definitely break away from this formula. Check out some fun side-dish casseroles and desserts below!

What goes with a breakfast casserole? ›

But I often get asked by my readers what to serve alongside breakfast casserole. You could always keep it simple and pair a breakfast casserole with something simple like crispy bacon, turkey sausage, some other breakfast meat, hash browns, or fresh fruit.

How to fix watery egg casserole? ›

10 Tips To Fix Or Prevent Watery Casseroles
  1. Prep vegetables ahead of time. Solstock/Getty Images. ...
  2. Add a starch. NIKCOA/Shutterstock. ...
  3. Experiment with pasta or grains. Pidjoe/Getty Images. ...
  4. Take the lid off. ...
  5. Drain fat from meat. ...
  6. Choose a dry or low-fat cheese. ...
  7. Sprinkle seeds into your bake. ...
  8. Remove excess liquid.
Oct 29, 2023

What to do if your casserole is too watery? ›

Add A Starch

Even if you're a beginner cook, you probably know that adding a starch can help transform liquidy dishes into creamy delights. Cornstarch and flour are two popular options, but don't you dare add them directly to your casserole. Instead, make a slurry.

How do you keep casserole topping from getting soggy? ›

Nuts. Naturally crunchy and unlikely to get soggy like the other foods on this list, nuts make a delicious choice for casserole topping. Good, neutral options include chopped walnuts or almond slivers. For bolder flavor and color, opt for pistachios, or make it an extra rich dish with a sprinkling of toasted cashews.

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