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I feel like every Black Friday needs a good sandwich.

The Thanksgiving Leftovers Croque Madame | @hbharvest

And for 2014, this Thanksgiving Leftovers Croque Madame is that sandwich. I realize that as time goes on I may not be able to think up a new sandwich every year, but as of right now I still have a few good ideas. Yes!!

Which brings me to this sandwich. Clearly it’s insane.

The Thanksgiving Leftovers Croque Madame | @hbharvest

I mean look at the thing. For one it’s huge (but really, shouldn’t every Thanksgiving sandwich be huge???!). Two, it’s dripping with cheesy gravy (yes, there is such a thing) and three, there is crispy prosciutto AND fried eggs. See, best Thanksgiving sandwich ever.

The Thanksgiving Leftovers Croque Madame | @hbharvest

Ok so, let’s talk about your Thanksgiving. How was it? Was there any disaster stories? Did everyone’s turkey turn out awesome? Are you all still stuffed?

My Thanksgiving is currently still underway, since the house is packed (everyone’s here), but you guys, my fried turkeys never happened! Due to a Thanksgiving miracle, the oven guy and his wife decided to play angels and go out of their way to stop by and fix my oven. For some reason, they decided that before they left to head out of town to visit relatives in Nebraska they needed to stop and take care of my oven. Thank God!! I was so nervous about doing the turkey, and then so happy to have an excuse not to have to cook them. I will have to tell you all about it once the house is semi calmed, but as of right now there are people talking a million miles a minute in the next room over and it is nearly impossible to focus.

The Thanksgiving Leftovers Croque Madame | @hbharvest

Sooo. These sandwiches. Oh my gosh, they are killer. If you liked last years waffles, than you have to try these sandwiches. They are kind of one upping the waffles.

It’s all about the cheese sauce. It’s a mix of gravy, milk and Gruyère and yes, it’s sin worthy. But as of yesterday, diets went out the door until January first in my book. Smart thinking on my part if I do say so myself.

The Thanksgiving Leftovers Croque Madame | @hbharvest

The Thanksgiving Leftovers Croque Madame | @hbharvest

If you have ever had a classic french croque madame than you know this has to be good. I basically just added on to that sandwich only I used turkey, crispy prosciutto (because I am obsessed!) and croissants. Oh right, and mashed potatoes, gravy, cranberry sauce and even a little leftover roasted brussels sprouts.

FYI, croissants are the way to go when it comes to any sandwich. The flakey layers are to die for.

The Thanksgiving Leftovers Croque Madame | @hbharvest

I also made a french toast version too. It’s so messy which is why I made it optional, but if you don’t mind a little mess than you really should try it. It just sort of adds a little extra specialness. Not that this needs any more specialness, but still, the caramelized french toast version is good.

The Thanksgiving Leftovers Croque Madame | @hbharvest

And now I need to go find some pie because I made three yesterday and the last slice of chocolate pecan is calling my name.

The Thanksgiving Leftovers Croque Madame | @hbharvest

The Thanksgiving Leftovers Croque Madame.

Prep Time 12 minutes
Cook Time 8 minutes
Total Time 20 minutes
Servings: 4 Sandwiches
Calories Per Serving: 3955 kcal

Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed.


  • 1 cup leftover gravy
  • 1/2 cup milk
  • pinch of nutmeg
  • 2 cups shredded gruyere cheese
  • 1/2 cup grated parmesan
  • 4 croissants, halved
  • 4 tablespoons dijon mustard
  • 1 cup leftover mashed potatoes
  • 1 cup leftover turkey
  • 1 cup leftover cranberry sauce
  • 1/2 cup leftover vegetables
  • 4-68 slices baked crispy prosciutto
  • 4 fried eggs, for serving
  • crispy sage, for serving


  • 1. Add the gravy and milk to a small pot and bring to a gentle boil. Add a pinch of nutmeg. Remove from the heat and stir in 1 cup Gruyère and the parmesan, stirring until melted.
    2. Preheat the the oven to 425 degrees F.
    3. Place the 4 bottom halves of the croissants on a parchment lined baking sheet. Spread 1 tablespoon mustard over each. Spoon over a layer of mashed potatoes. Drizzle the cheese sauce over the mashed potatoes. Top with turkey, cranberry sauce, any leftover vegetables, and a slice crispy prosciutto. Add the top croissant. Spoon the remaining cheese sauce over the sandwich, then top each with the remaining Gruyère. Bake until cheese sauce is bubbling and evenly browned, about 3–4 minutes.
    4. Meanwhile, fry the eggs.
    5. Place an egg on top of each sandwich, and serve hot with a few fried sage leaves. Grab your forks and knives!
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The Thanksgiving Leftovers Croque Madame | @hbharvest

What are you doing with your leftovers today???

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  1. 5 stars
    Made these with leftover Christmas fried turkey, your Easy Gruyere Croissants, and left off the cranberry (personal preferences). My skeptical 17 year old son said, “Wow, that’s really creative and really good!” I did the boys with mashed potatoes, and mine with stuffing. Wish I would have tried it with the cranberry because that combo could have been awesome!

    1. Hey Rose,
      I always recommend that if the nutritional information is important to you, you use your own personal calculator. Ours is automatic and controlled by google. It’s not something we’d prefer to be using. We are required to. I’m sorry for the trouble, we do our best! Hope you enjoy the recipe! xT

  2. OMG this was sooooo good! made it saturday night and added bacon instead of proscuitto. LOVED the mustard- i almost didn’t add it and so glad i did! i also used green beans i/o brussel sprouts. my husband and me thought it was to die for. thanks so much!