Bake for around 20 minutes, just long enough for the morbier cheese on top to melt and brown.
Your morbiflette is ready.
Remarks
If you like the crispness of the grilled morbier crust, you can keep it and add it to the top before baking, as indicated in step 11, or leave the morbier slices on and place them as they are on the potatoes.
This recipe's proportions are only indicative, so don't hesitate to adapt them to your own taste and to what you have on hand.
If you prefer a more grilled Morteau sausage side, in step 4 first place the cubes in the pan on their own and without oil, then after just 3 or 4 minutes of cooking, add the onion.