A croissant sandwich is a croissant sliced in half horizontally and filled like a roll: eggs and cheese in the morning, ham and Swiss or chicken salad at lunch, leftover turkey after Thanksgiving. The best ones start with a pastry that is crisp outside and soft inside, sliced once it has cooled for a few minutes, and filled with something that adds moisture without soaking the layers. Warm fillings go in last; cold ones wait until it has fully cooled.
Below you will find twelve croissant sandwich ideas in one table, how to bake from frozen and slice without crushing the layers, five fillings worth making in detail, and how to plan a week of breakfasts without freezing them soggy.
What makes a good croissant for a sandwich?
A sandwich puts weight and moisture on a pastry made of thin, fragile layers. Three things decide whether it holds:
- Real butter layers. Dough laminated with butter has a crisp, flaky shell and an open, honeycomb crumb. That shell is what keeps a slice of tomato or a spoon of egg from turning the bottom half to paste.
- A fresh bake. A croissant is usually at its best soon after it leaves the oven. A day-old one tends to go soft all the way through and flattens when you press it.
- A size that matches the filling. Plan on one per sandwich, and keep the filling to about the height of the pastry itself, or it slides out of the sides.
That is why ours are made to finish in your oven. Our butter croissants are made with real butter, shipped frozen from the Fresh Baguette kitchen in Germantown, Maryland, and go straight from the freezer to the oven. You get it at the moment it is best for a sandwich: just baked and still crackling. Our frozen croissants also include filled ones, like chocolate and almond; for a savory sandwich, we suggest the plain butter croissant.
How do you bake and slice croissants for sandwiches?
Bake it from frozen
For our butter croissants, the instructions on the product page are simple. Preheat the oven to 425°F. Take the croissants out of the freezer and out of the packaging, set them on a baking sheet, and put the sheet on the middle rack. Bake for 5 to 7 minutes, until warmed through and crisp. Then let them cool for at least 5 minutes before serving. No thawing needed. Other croissants and pastries have their own instructions on their product pages.
Let it rest, then slice
Those 5 minutes of rest are also what make a clean cut. Straight out of the oven, the inside is still steaming and the layers tear. Once it has rested:
- Lay it on its side on a cutting board.
- Use a serrated bread knife and a light sawing motion. Do not press down.
- Cut horizontally through the middle, from the rounded back toward the tips. You can stop just short of the far edge to keep a hinge, which holds loose fillings like scrambled egg in place.
- For a cold sandwich, wait until it is at room temperature, about 20 to 30 minutes. Butter, mayonnaise and cheese melt and slide on warm pastry.
Build it in the right order
Start with a spread on both cut sides: butter, mustard, mayonnaise or a soft cheese. That thin layer protects the crumb from wet ingredients. Next comes sliced cheese, meat or egg, and anything wet or leafy (tomato, cucumber, lettuce) in the middle, away from the bread. Season the filling, not the bread.
Butter Croissants, pack of 3
Made with real butter and shipped frozen. Bake straight from the freezer at 425°F for 5 to 7 minutes, rest 5 minutes, slice and fill. Add a pack or two to your box.
See the butter croissants12 croissant sandwich ideas
A quick guide to what goes inside, and whether to serve it warm or cold. Quantities are for one sandwich.
| Sandwich | Filling | Serve | Best for |
|---|---|---|---|
| Egg and cheese | 1 to 2 soft scrambled eggs, 1 slice cheddar | Warm | Breakfast |
| Bacon, egg and cheese | Scrambled or fried egg, 2 strips crisp bacon, cheddar or American | Warm | Breakfast |
| Sausage and egg | 1 cooked sausage patty, fried egg, pepper jack | Warm | Breakfast |
| Smoked salmon | Cream cheese, smoked salmon, thin red onion, capers, dill | Cold | Brunch |
| Avocado and egg | Mashed avocado with lemon and salt, sliced hard-boiled egg | Cold | Breakfast |
| Ham and Swiss | Dijon, 2 slices Swiss, 2 to 3 slices ham | Warm or cold | Lunch |
| Croque-style | Ham, Gruyère, a spoon of béchamel, more cheese on top | Warm | Lunch |
| Chicken salad | About 1/2 cup chicken salad, lettuce | Cold | Lunch |
| Turkey and cranberry | Sliced turkey, cranberry sauce, brie or Swiss, arugula | Warm or cold | After Thanksgiving |
| Caprese | Fresh mozzarella, tomato, basil, pesto, salt | Cold | Lunch |
| Tuna salad | Tuna with mayonnaise, celery and lemon, cucumber slices | Cold | Lunch |
| Butter and jam | Salted butter, wild blackberry jam | Just warm | Breakfast, snack |
The breakfast croissant sandwich
This is the version most people are looking for, and it works because buttery layers and soft, barely set eggs belong together. For 3 sandwiches:
- 3 croissants (one pack of butter croissants)
- 5 to 6 large eggs, a pinch of salt and pepper
- 1 tablespoon butter
- 3 slices cheddar, or 1/3 cup grated
- Optional: 6 strips bacon, or 3 slices ham, a handful of baby spinach
- If you use bacon, cook it first so it is ready when the eggs are.
- Put the frozen croissants in the oven at 425°F for 5 to 7 minutes. While they bake and rest, cook the eggs.
- Whisk the eggs with salt and pepper. Melt the butter in a nonstick pan over medium-low heat, add the eggs and stir slowly with a spatula. Take them off the heat while they still look a little wet: they keep cooking, and dry eggs make a dry sandwich. Fold in the cheese at the end.
- Slice the rested croissants. Divide the eggs between the bottom halves, add bacon or ham and the spinach, close and serve right away.
A fried egg works too. Cook it until the white is set and the yolk is still jammy, so the yolk runs into the crumb rather than onto the plate. Making eggs for a crowd? Bake a croissant and egg casserole the night before.
Lunch croissant sandwiches
Hot ham and Swiss
Spread Dijon mustard (or a mix of mustard and a little honey) on both cut sides. Lay one slice of Swiss on each side, ham in the middle, and close. Wrap each sandwich in foil and warm it in a 350°F oven for about 10 to 15 minutes, until the cheese melts. This is a general method for warming an assembled sandwich; to bake the croissants themselves, follow the 425°F instructions above. The foil keeps the pastry from drying out a second time. For a croque-style version, skip the foil, add a spoon of béchamel and grated Gruyère on top, and finish for a minute or two under the broiler, watching closely. If you like the simplest ham sandwich, try the Parisian jambon beurre on a baguette.
Chicken salad croissant
The cold lunch classic. Mix 2 cups of chopped cooked chicken with about 1/3 cup mayonnaise, a stalk of celery cut small, a teaspoon of Dijon, lemon juice, salt and pepper. That makes enough for 4 to 5 sandwiches. Halved grapes or chopped toasted pecans add crunch and a little sweetness. Let the croissant cool fully, put a lettuce leaf on the bottom half as a barrier, then about 1/2 cup of chicken salad. Keep the salad in the fridge (FoodSafety.gov gives 3 to 4 days for chicken salad) and assemble just before eating. For burger night, here is how to pick a burger bun.
Caprese
Brush both sides with pesto, add thick slices of fresh mozzarella and ripe tomato, a few basil leaves, salt and pepper. Salt the tomato and let it drain on a paper towel for a few minutes first. This one is at its best in late summer, with good tomatoes.
Leftover turkey sandwich on a croissant
The day after Thanksgiving, few breads are a more generous home for leftovers. Use the turkey cold from the fridge, or reheat the slices in a covered pan with a spoon of gravy or broth until they reach 165°F, the reheating temperature the USDA recommends for leftovers. Spread cranberry sauce on one side and mayonnaise or a little leftover stuffing on the other, then add the turkey, a slice of brie or Swiss and a handful of arugula. For a warm version, wrap in foil and give it 10 minutes at 350°F so the cheese softens. A croissant baked that morning from the freezer makes day-three turkey feel like a new meal (the USDA gives cooked leftovers 3 to 4 days in the fridge). For a group, set the fillings out on a breakfast grazing board and let everyone build their own.
Sweet croissant sandwiches
The simplest of all: a warm one, split, with salted butter and a spoon of our wild blackberry jam. Other sweet fillings that hold up well: thin slices of apple with brie, ricotta with honey and figs, or strawberries with a little whipped cream cheese. Keep sweet fillings light; the dough already brings plenty of butter.
Can you make croissant sandwiches ahead?
You can, but how you do it matters. A common make-ahead method is to assemble breakfast sandwiches, wrap and freeze them, then reheat. It is convenient, but in our view a pastry that has been filled, frozen and reheated loses much of its crunch.
The alternative is to prepare the fillings ahead and keep the croissants frozen until the morning you eat them:
- Fillings: cook bacon or sausage and slice ham and cheese ahead, and keep them in the fridge in separate containers. Plan for a few days at a time rather than a full week: FoodSafety.gov gives 3 to 4 days for chicken, tuna and egg salads and for cooked meat leftovers, and 3 to 5 days for deli-sliced ham.
- Croissants: keep them in the freezer in their closed packaging, where they keep for up to 6 months. Bake only what you need: 5 to 7 minutes at 425°F, plus 5 minutes of rest. The eggs cook in that time.
That way breakfast takes about 10 to 12 minutes once the oven is hot, and every sandwich starts freshly baked. If you want a steady supply for the freezer, our bakery subscription can be skipped, paused or cancelled anytime.
What about the Cro'Gel?
For a toaster option, our Cro'Gel is a croissant bagel: the shape of a bagel, made with our croissant dough. Slice it in half, toast it from frozen for 1.5 to 3 minutes, then fill it like a bagel; you will find it with our sandwich breads.
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Croissant sandwich questions
What to put in a croissant sandwich?
Anything you would put in a soft roll, as long as it is not too wet: eggs, cheese, ham, bacon, turkey, chicken or tuna salad, smoked salmon with cream cheese, avocado, tomato and mozzarella. Add a spread on both sides first, and keep wet ingredients in the middle of the filling. Still have holiday leftovers? Start from our sourdough stuffing recipe.
Is a croissant sandwich served hot or cold?
Both. Egg, bacon and melted cheese fillings go in one that is still slightly warm. Salads, smoked salmon and fresh cheese go in one that has cooled to room temperature, so nothing melts or slides.
What is a croissant sandwich called in France?
There is no single name; it is generally named after its filling. A ham and cheese croissant, for example, is commonly called a croissant jambon-fromage. In the United States, "croissant sandwich" or "breakfast croissant" covers most of them.
Should you toast the croissant first?
A freshly baked one does not need it. If yours is a day old, we suggest warming it whole in a 350°F oven for a few minutes before slicing, rather than toasting the cut sides, which tends to dry out the layers. Baking from frozen just before you eat skips the problem entirely.
How many sandwiches for a brunch?
Plan on one sandwich per person, plus a few cut in half for those who want to try two fillings. Our butter croissants come in packs of 3, and each pack takes one slot in a box you build (4 to 12 packs, boxes from $89); you can see how ordering works on how it works.
Fresh Baguette started as a neighborhood bakery opened in Washington, D.C. in 2013 by Florent and Bertrand, who came from France. You can read our story here, and then go make a sandwich.