Turn the oven on to 200 °C, convection if you have it. Butter the baking dish with half of the 15 g of butter.
Prep the broccoli
Break the 120 g of broccoli into small florets and cut the bigger ones in half so they all cook at the same speed.
Cook the pasta and broccoli
Bring a big saucepan of salted water to a boil and drop in the 210 g of spaghetti. Add the broccoli for the last 3 minutes, then drain everything together.
Tip · Pull the spaghetti 1 minute before the package time, it finishes cooking in the oven without going soft.
Make the sauce
In the mixing bowl, mix the 8 cl of crème fraîche, the 5 cl of milk, the nutmeg, salt and pepper. Drain the can of tuna well and flake it into the sauce.
Mix it all
Tip the drained pasta and broccoli into the mixing bowl and gently toss with the tuna sauce.
Fill the dish
Pour the mixture into the buttered dish. Mix the Swiss cheese and Parmesan, spread them over the top and dot with the rest of the butter in small pieces.
Bake until golden
Bake at 200 °C until the top is nicely golden and the edges are bubbling.
Tip · If the top browns too fast before the gratin bubbles, cover the dish with foil or turn the oven down to 180 °C.
And there you go, it's readyCheck off every step to celebrate.
The questions you're asking
short answers, numbers you can check
How many calories in a serving?
One serving has about 843 kcal. 38% comes from carbs, 25% from protein and 35% from fat.
80 gCarbs
53 gProtein
33 gFat
Per serving (the dish for 2, divided by 2)
Energy
843 kcal
Protein
53.1 g
Carbs
80 g
of which sugars
5.6 g
Fat
32.6 g
of which saturated fat
19.1 g
Fiber
5.4 g
Salt
1.2 g
Worked out ingredient by ingredient with the ANSES Ciqual 2025 table, never written by an AI. It's an estimate: veggie sizes and brands make the numbers vary.
How much does it cost?
About $2.76 a serving, adding up the average prices of the ingredients you need to buy.
≈ $5.51for 2 people
≈ $2.76a serving
Pantry salt, oil and spices aren't counted. Your store and your brands will move the total, but the ballpark is right.
How long does it keep?
1 day in the fridge, in a closed container, once cooled within two hours. After that, into the freezer it goes.
1 dayin the fridge
Yesin the freezer, thaw it in the fridge the day before