Ingredients: 6 medium baking potatoes, peeled, thinly sliced 3 tablespoons butter 1 tablespoon olive oil 2 cups milk 2 tablespoons all purpose flour 1 onion, finely chopped 1 cup diced ham salt and pepper to taste 1 teaspoon dried oregano Preparation: Melt the butter in a saucepan over low heat. Add salt, pepper and flour.…