Croissant Breakfast Sandwiches

Ingredients

• 8 largeeggs
• 60 ml (¼ cup)milk
• 14 g (1 tablespoon)butter
• 28 g (¼ cup)shredded cheddar
• to tastesalt and pepper
• 6 thick slices (or 12 thin deli slices)ham
• 6 thick slicesSwiss cheese
• 6croissants
• 60 ml (¼ cup)mayonnaise
• 10 ml (2 teaspoons)wholegrain mustard
• 10 ml (2 teaspoons)honey
• 1.25 ml (¼ teaspoon)onion powder
• to tastepepper

Instructions

1. 1

   Heat the oven

   Preheat the oven to 180°C (350°F).

2. 2

   Whisk the eggs

   In a medium bowl, whisk the eggs with the milk.

3. 3

   Scramble the eggs

   Warm a non-stick frying pan over medium-low heat and melt the butter. Add the egg mixture and move a spatula through it continuously as it cooks. Once soft curds have formed but the eggs still look slightly wet, take the pan off the heat. Stir in the cheddar and season with salt and pepper to taste.

4. 4

   Mix the sauce

   Meanwhile, whisk together the mayonnaise, wholegrain mustard, honey, onion powder and pepper, then set the sauce aside.

5. 5

   Build the sandwiches

   Arrange the ham, Swiss cheese and scrambled eggs over the bottom halves of the croissants. Spread the sauce over the top halves, then close the sandwiches.

6. 6

   Bake and serve

   Set the sandwiches on a baking tray and bake for 8–10 minutes, until the cheese is melted and gooey. Serve warm.

What are croissant breakfast sandwiches?

They are a breakfast take on a filled sandwich, using a flaky croissant in place of bread. This American-style version brings together ham, cheese and scrambled eggs, with a sweet, tangy sauce to balance the rich pastry.

The brief bake warms the filling and melts the cheese without requiring the eggs to cook fully in the oven. Scrambling them gently first helps keep the centre soft.

Nutrition and macros by portion

The nutrition label shows one serving as written: 488 calories, 16g protein, 34g carbs, 32g fat.

The croissants supply most of the carbohydrates, while butter, mayonnaise and pastry contribute much of the fat. Eggs, ham and cheese provide protein; serve a sandwich with fruit or salad for a fresh side.

Choosing the fillings

Ham: Thick slices give the sandwich a substantial, savoury centre; thin deli slices work too, as listed in the recipe.

Cheese: Swiss cheese goes inside the sandwiches, while cheddar is stirred into the eggs. Keep the Swiss slices over the ham so they sit close to the heat and melt during baking.

Getting soft scrambled eggs

Low heat: Cooking the eggs over medium-low heat gives you more control as the curds form. Keep the mixture moving with a spatula rather than leaving it to set in one layer.

Finish point: Take the pan off the heat while the eggs still look a little wet. They will continue to warm when assembled and baked, so cooking them until fully dry can make the filling firm.

The honey-mustard sauce

Mixing: Whisk the mayonnaise, mustard, honey and onion powder until evenly combined, then season with pepper to taste. The mayonnaise makes a creamy spread, while honey softens the mustard’s sharpness.

Spread: Apply the sauce to the croissant tops before closing the sandwiches. Use an even layer so its flavour carries through without pooling in one spot.

Assembling for the oven

Layering: Put the ham, Swiss cheese and eggs on the bottom halves, then cap with the sauce-coated tops. Keep the filling within the croissant edges to make the sandwiches easier to handle.

Baking: The 8–10-minute bake is for warming the assembled sandwiches and melting the cheese. Check them at the shorter end of the range, since ovens and croissant sizes vary.

What to serve alongside

The croissants and creamy fillings make a satisfying main for breakfast or brunch. Fresh fruit or a simple green salad can add a fresh contrast without competing with the sandwich.

Serve the sandwiches as soon as they come out of the oven, while the cheese is gooey and the pastry is warm.

Recipe notes & tips

• Whisk the eggs and milk just before cooking for an evenly mixed scramble.
• Keep the pan over medium-low heat so the eggs form soft curds rather than browning quickly.
• Remove the eggs from the heat while they still look slightly wet.
• Whisk the sauce until the honey is blended through the mayonnaise and mustard.
• Check the sandwiches after 8 minutes and bake longer only if the cheese needs more time to melt.

Variations

• Change the cheese: Use another good-melting cheese in place of Swiss.
• Use thin ham: Layer 12 thin deli slices in place of the 6 thick slices.
• Adjust the sauce: Add the pepper gradually and taste as you mix.
• Make it sharper: Increase the wholegrain mustard slightly for a more pronounced tang.
• Skip the honey: Leave it out for a less sweet mayonnaise and mustard spread.

Common mistakes to avoid

• Overcooking the eggs: Take them off the heat while they are still slightly wet so they stay soft.
• Using high heat: Cook over medium-low heat to avoid quickly setting or browning the eggs.
• Overfilling the croissants: Keep the ham, cheese and eggs within the pastry so the sandwiches close neatly.
• Putting sauce inside the eggs: Spread it on the croissant tops as directed, keeping the flavours distinct.
• Baking for too long: Start checking at 8 minutes so the croissants do not dry out while the cheese melts.

How to store

Refrigerate leftover sandwiches in an airtight container and eat within 2 days. Reheat in an oven until warmed through; the croissants may be less crisp after storage.

Frequently asked questions