Place the toast in a baking dish, spread the turkey breast slices on top, add the tomatoes and season a little.
Prepare a roux out of butter and flour and fill up with the cream. Cut the cheese into small cubes and stir into the sauce until everything is melted. Salt a little and pepper well.
Pour the cheese sauce on the tomatoes. Bake in the oven at 180 ° C top / bottom heat for about 20 minutes until it turns a little brown.
Meanwhile, fry the bacon slices in a pan without fat until they are crispy and then place them on the cheese.