Preheat the oven to 200 ° C (top / bottom heat). Butter a large baking dish thickly.
Cut the baguettes into 1 cm thick slices and layer them one after the other in the form like a roof tile.
Cut the raclette cheese into strips approx. 3 cm thick and place one in front of each slice of bread. Place half a slice of Coppa in front of every 3rd slice. Now distribute 125 ml of the dry white wine evenly over the rows of bread.
Put the remaining ingredients in a bowl and stir everything vigorously with the whisk and season to taste. Pour the topping evenly over the rows of bread and bake the ramequin at 200 ° C on the bottom rack for 25 - 30 minutes until golden brown.