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ham and cheese croissant sandwiches lined up on a white plate

Baked Ham and Cheese Croissant Sandwiches

Take a simple ham and cheese sandwich to a whole new level with a buttery croissant and tangy mayonnaise mustard sauce.
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Course: Breakfast/Brunch/Lunch, lunch
Cuisine: Amercian
Keyword: brunch, croissant
Prep Time: 5 minutes
Cook Time: 15 minutes
Total Time: 20 minutes
Servings: 4 sandwiches
Author: Laura Franco


  • 4 croissants
  • 12 slices deli ham - sliced thin
  • 4 slices deli Swiss cheese or baby Swiss cheese
  • 1/4 cup mayonnaise
  • 2 tbsp yellow mustard
  • 1 tbsp A1 Steak Sauce
  • 1 tbsp butter - melted
  • 1 tbsp black or white sesame seeds



  • Preheat oven to 350°.
  • Carefully slice the croissants.
  • Place them on a parchment paper-covered baking pan or cookie sheet.
  • Generously slather the mustard mayonnaise sauce on one-half of the croissants.
  • Fold a couple of slices of deli ham and place them on one-half of the croissants.
  • Place a slice of cheese on top of the ham.
  • Slather any remaining mustard mayonnaise sauce and the second half of each croissant.
  • Place the tops on the croissants.
  • Melt the butter in the microwave for 20-30 seconds.
  • Liberally brush the top of each croissant with the butter.
  • Sprinkle the sesame seeds on top of the buttered croissants.
  • Lightly cover the baking pan with alumnium foil.
  • Bake for 10 minutes.
  • Remove the foil and bake for another 5 minutes.


  • Mix mayonnaise, mustard, and steak sauce in a small dish.


Krazy Kitchen Mom Tips:
  • I highly recommend buying luncheon meats and cheese from the deli to ensure freshness. It's also very economical since you can buy exactly the amount you need and not worry about having too many leftovers. I prefer to purchase meats and cheese from the deli by the number of slices I need rather than by the 1/4 pound or 1/2 pound.
  • These sandwiches can be made ahead of time and stored wrapped in aluminum foil in the refrigerator. To reheat, place them in a toaster oven or oven at 350° for 10-15 minutes.