Francesinha is Porto’s very own sandwich, and it takes a knife, a fork and a good appetite. Crisp slices of toast layered with thin beef steak, ham and smoked sausage disappear under a blanket of melted cheese, and finally a hot, lightly spiced tomato and beer sauce is ladled over the whole thing, so it pools at the bottom of the plate. The sauce is called molho de francesinha in Portuguese, and it is what makes the dish truly special.
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When I make francesinha in the air fryer, I toast the bread, cook the meat and melt the cheese in the basket while the sauce simmers gently on the stovetop. The result is crisp bread, juicy meat and cheese that bubbles lightly at the edges, without having to turn on the oven. With a fried egg on top and fries on the side, you are close to a café in Porto.
Estimated reading time: 4 minutes
Table of Contents
Why I love francesinha in the air fryer
Francesinha comes together in several steps, and that is exactly where the air fryer makes a difference. The bread turns golden and crisp in a few minutes, so it can carry the meat, the cheese and the sauce without going soft. The sausage gets a lovely colour, and the thin beef steaks are cooked before you have had time to set the table. I pour the cooking juices that collect at the bottom of the air fryer straight into the sauce, where they add extra depth. Finally, I give the sandwiches their cheesy gratin finish in the same basket, so the cheese melts evenly and hangs over the edges, just as it should.
Francesinha is not a croque monsieur
The name means something like “little French girl”, and the dish is often confused with the French croque monsieur. But where a croque monsieur is a simple toasted sandwich with ham and cheese, often topped with béchamel, francesinha is built on several layers of meat and a hot tomato and beer sauce. There is no béchamel in a real francesinha. It is the meat and the sauce that carry the dish, so don’t skimp on either of them.
My kitchen test of francesinha
I have tested francesinha several times in my Cosori Dual Blaze, which has heating elements at both the top and the bottom of the basket. You can tell from the bread, which turns golden on both sides when the slices are toasted at 200 °C. The sausage and the beef get the same temperature, so they take on colour without drying out. The gratin finish runs at 180 °C, and the slightly lower heat gives the cheese time to melt completely and bubble lightly, without the edges of the bread getting too dark. All in all, the dish takes 45 minutes: 15 minutes of preparation and 30 minutes of cooking, during which the sauce simmers on the stovetop while the air fryer does its work. In my Philips XXL there is plenty of room for two sandwiches at a time.
Thicken the sauce with a little cornflour at the end, so it turns thick and glossy. A thin sauce just runs off, while a thick sauce settles over the cheese and pools at the bottom of the plate.
Tips and tricks from the author: Morten Jensen
The typical mistakes and how to avoid them
The first mistake is to assemble the sandwich with bread that hasn’t been toasted. Sandwich bread soaks up the sauce and quickly turns to mush, so always toast the slices in the air fryer first. That gives a crisp surface that can carry both the meat and the sauce. The second mistake is to pour the sauce over the sandwich before it goes into the basket. The sauce belongs on the plate and is ladled over after the gratin finish, once the cheese has melted. Otherwise the bread goes soft, and the bottom of the air fryer ends up awash with sauce. The third mistake is loose cheese slices and baking paper lying on their own in the basket. The airflow can lift the cheese and suck the paper up towards the heating element, so press the cheese slices down lightly, and only put the paper in the basket together with the sandwich.
How to serve francesinha
Francesinha is served in a deep plate, so there is room for plenty of sauce. This is what I always put on the table:
- A fried egg with a runny yolk on top of each sandwich
- Crispy fries for dipping in the hot sauce
- A cold lager, the classic choice in Porto
- The rest of the tomato and beer sauce in a small jug, so everyone can have more
If you have an air fryer with two baskets, you can cook fries in one basket while the sandwiches get their cheesy gratin in the other.
Storage and reheating
Francesinha is best eaten the same day, but leftovers keep for 1-2 days in the fridge, covered. Reheat the sandwich in the air fryer at 170 °C for 5-7 minutes, and warm the sauce separately in a pot, so the bread doesn’t go soft. The sandwich is not suitable for freezing, but the sauce can be frozen for up to 3 months, so it can be well worth making a double batch.
Francesinha is Portuguese comfort food, and with the air fryer taking care of the bread, meat and cheese, it becomes surprisingly manageable to make at home. Get the deep plates out, and be generous with the sauce.
FAQ
A pre-cooked smoked sausage is a good substitute, and it is easy to find in Danish supermarkets. If you can get hold of Portuguese linguiça or Spanish chorizo, it can be used instead.
Use a sliced cheese that melts well, e.g. Edam or mild Danbo. The cheese should cover the whole top of the sandwich and preferably hang slightly over the edges.
A 5-6 litre air fryer typically has room for 2 sandwiches at a time. If you have a smaller air fryer, bake them one at a time and keep the sauce warm in the meantime.
Recipe
Francesinha in the Air Fryer
Cooking Guide
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Step 1:
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Start the guide and follow the recipe one step at a time.
Cost of the dish
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Our estimate is based on average food prices for the current year 2026.
Estimated price for the whole dish:
Airfryer size
All our recipes are tested in a Philips Airfryer 2000 Series NA230/00 – 6.2 L
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Recommended equipment
- 1 Air fryer
- 1 Cutting board
- 1 Knife
- 1 Saucepan
- 1 Ladle
- 1 Immersion blender
- 1 Small bowl
- 1 Brush
- 1 Parchment paper (for air fryer)
- 1 Frying pan
- 1 Turner
- 4 Deep plate
Shopping list
Ingredients
Tomato and beer sauce
- 25 g butter
- 1 pcs onion (Finely chopped)
- 2 clove garlic (Finely chopped)
- 2 tbsp tomato purée
- 330 ml lager (E.g. pilsner)
- 400 g chopped tomatoes (1 tin)
- 3 dl beef stock
- 1 dl port wine (Optional)
- 1 pcs bay leaf
- 1 tsp chilli flakes (Or piri-piri; use less for a mild sauce)
- 1 tsp sugar
- 1 tbsp cornflour (Mixed into 2 tbsp cold water)
For serving
- 4 pcs eggs (For fried eggs)
- 15 g butter (For frying)
How to make it
Preparation
- Finely chop 1 pcs onion and 2 clove garlic for the sauce.
- Cut 250 g smoked sausage in half lengthways and divide it into pieces that fit the slices of bread.
Tomato and beer sauce
- Melt 25 g butter in a saucepan over a medium heat. Sweat the onion and garlic for 3-4 minutes, until soft but not browned.
- Let the sauce simmer uncovered over a low to medium heat for 20 minutes, stirring now and then. Meanwhile, move on to the air fryer steps below, and come back to the sauce when the time is up.
- Take out the bay leaf and blend the sauce until completely smooth with a stick blender.
Cooking in the air fryer
- Preheat the air fryer to 200 °C fan.
- Toast 8 slices sandwich bread in two batches of 4 slices at 200 °C for 3 minutes per batch, until golden and crisp.
- Place the sausage pieces and the beef in the basket in a single layer and cook them at 200 °C for 4 minutes, until the sausage has taken on some colour and the meat is just cooked through. Do this in two batches if everything won’t fit. Pour the cooking juices from the bottom of the air fryer into the sauce. That gives it extra depth.
- Cover the sandwiches with 16 slices cheese, 4 slices on each, so the top is completely covered and the cheese hangs slightly over the edges. Press the slices down lightly so the airflow in the air fryer doesn’t lift them.
- Cook the sandwiches at 180 °C for 5-6 minutes, 2 at a time: lift them into the basket on their baking paper and take them out when the cheese has melted and is bubbling lightly.
Serving
- Melt 15 g butter in a frying pan while the last batch is in the air fryer, and fry 4 pcs eggs sunny side up for 2-3 minutes, until the whites have set and the yolks are still runny.
- Transfer each Francesinha to a deep plate with a spatula, and place a fried egg on top.
- Serve immediately: ladle plenty of the hot tomato and beer sauce over each Francesinha, so it pools at the bottom of the plate, and put the rest of the sauce on the table.
Our notes for the recipe
Toast the bread before you assemble the sandwiches. That way it can carry the meat, cheese and sauce without going soft. Only put the baking paper in the basket once the sandwich is sitting on it, so the paper doesn’t get sucked up towards the heating element. Francesinha is often confused with a croque monsieur, but it is the layers of meat and the hot tomato and beer sauce (molho de francesinha), not béchamel, that make the dish. So don’t skimp on the sauce. Variation:
If you can get hold of Portuguese linguiça or Spanish chorizo, it can replace the smoked sausage. In Porto, many people add a splash of brandy or whisky to the sauce along with the port, and some put an extra slice of cheese inside the sandwich. Serving:
Serve the Francesinha in deep plates with fries for dipping in the hot sauce. If your air fryer has two baskets, you can cook frozen fries at 200 °C for 15-18 minutes in one while the sandwiches get their cheesy gratin in the other. A cold lager is the classic choice on the side. Portion size:
A 5-6 litre air fryer typically has room for 2 sandwiches at a time. If your air fryer is smaller, bake them one at a time and keep the sauce warm in the meantime.
Your notes for the recipe
Nutrition per serving (Guideline)
Important about shelf life and nutrition
Nutrition per serving (guideline): Calculations are based on data from the United States Department of Agriculture (USDA). Shelf life (guideline): Shelf life data is provided, as far as possible, by public institutions, including national food authorities. Our information is therefore only indicative, and it is your responsibility to obtain and calculate accurate information about shelf life and nutrition for all recipes on airfryerkogebogen.dk
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