Turn the oven on to 200 °C on broil or convection. Line the baking sheet with parchment paper.
Slice the red onion
Peel the small red onion and cut it into thin slices.
Cook the onion
Melt 5 g of butter in the skillet over medium heat. Add the onion with a pinch of salt and sauté it for 3 min until tender.
Prep the avocado
Cut the avocado in half, remove the pit and scoop out the flesh with the spoon. Mash it with a fork in the bowl with the crème fraîche, nutmeg, salt and pepper.
Tip · Mash the avocado right before topping, otherwise it turns brown. If you have too much, keep the pit in the mix while it waits.
Butter and toast the bread
Butter one side of the 4 slices of sandwich bread with the remaining 10 g of butter. Bake them on the sheet for 5 to 6 min, until golden.
Tip · Butter the bread all the way to the edges and start watching it at 5 min, because sandwich bread goes from golden to burnt fast.
Top the toasts
Spread the avocado over the toasted slices. Add the ham on top, then the cooked onion.
Add the cheese
Sprinkle the 50 g of shredded Swiss cheese over the 4 toasts, spreading it evenly.
Melt the cheese
Bake for 3 to 4 min, until the cheese is melted and lightly golden. Serve right away.
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 537 kcal. 20% comes from carbs, 17% from protein and 61% from fat.
27 gCarbs
23 gProtein
36 gFat
Per serving (the dish for 2, divided by 2)
Energy
537 kcal
Protein
22.6 g
Carbs
26.7 g
of which sugars
4.6 g
Fat
36.1 g
of which saturated fat
15.7 g
Fiber
4.7 g
Salt
1.7 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 $3.12 a serving, adding up the average prices of the ingredients you need to buy.
≈ $6.23for 2 people
≈ $3.12a 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?
Eat it fresh. Avocado turns brown within hours once cut. Save it for the day you eat it, it'll look way more appetizing!