3 famous gratin Recipes

olive oil, bacon, chopped, spanish onion, chopped, fresh mushrooms, chopped, flat leaf parsley, minced, fresh garlic cloves, minced, fresh cut green beans, celery salt, fresh ground white pepper, salted butter, all-purpose flour, half-and-half cream, dry white wine, mustard powder, granulated sugar, kosher salt, cayenne pepper, sharp cheese spread (kraft old english), freshly shredded sharp cheddar cheese, freshly shredded sharp cheddar cheese, grated parmesan cheese, french s french fried onions

butter, frozen petite whole onions, thawed (birds eye), flour, dry white wine, minced fresh leaf thyme, cream or 1/3 cup half-and-half, dry mustard (or prepared horseradish), freshly grated nutmeg, white pepper, kosher salt , to taste, grated sharp cheddar cheese, snipped fresh chives, to garnish