Ingredients:

béchamel:

• • 1/4 cup butter
  • 1/4 cup flour
  • 1 1/2 cups whole milk
  • 2 tablespoons whole grain mustard
  • pinch of salt

Sandwiches:

• 8 slices thick country-style bread
• 8 slices thick cut ham (great for leftovers)
• 4 oz. Swiss cheese, sliced
• 1 teaspoon dried basil

Directions:

1. Make sauce first: Melt butter in a medium saucepan over medium heat . Sprinkle flour over butter and stir, until mixture is pale and foamy, about 1-3 minutes. Gradually pour in milk, stirring continuously until mixture is smooth. Cook, stirring, until sauce is thick  about 4 -6  minutes. Remove from heat and whisk in mustard. Taste and add salt as needed.
2. For sandwiches: Preheat oven to 425 degrees. Spread one side of  4 slices of bread with sauce. Place bread sauce side up, on a parchment-lined baking sheet. Top  sauced bread with ham, 1/2 the cheese and top with remaining slices of bread.  Spread remaining sauce over the top side of the bread then top with remaining cheese and sprinkle with basil.
3. Bake until cheese is brown and bubbling, 10–15 minutes. Remove pan from oven and allow to rest for 3-5 minutes before serving.