Prosciutto and Goat Cheese Strata

INGREDIENTS

• 4 ounces provolone, grated (about 1 1/2 cups)
• 6 ounces prosciutto, thinly sliced or bacon
• 2 cups whole milk
• 8 ounces goat cheese, crumbled or Boursin
• 18 slices firm white bread crust removed
• 1/4 cup chopped green onions or leeks
• 3 tablespoons butter, melted
• 1/2 teaspoon salt
• 1 tablespoon Dijon mustard
• 6 tablespoons thinly sliced fresh basil
• 5 large eggs