French Toast with Lemon-Parmesan Sauce Recipe

Ingredients

• 8 slices challah bread, 1-inch thick
• 4 eggs
• 1 cup heavy cream
• 1 tsp. each kosher salt and black pepper
• 1 Tbsp. olive oil
• 1 pkg. prosciutto, sliced (4 oz.)
• 3 Tbsp. unsalted butter
• 2 egg yolks
• 1 ½ cups whole milk, warmed, divided
• 1 Tbsp. Dijon mustard
• 1 Tbsp. all-purpose flour
• ¼ cup grated Parmesan
• 1 Tbsp. minced lemon zest
• Pinch of cayenne pepper and grated nutmeg
• 1 recipe Roasted Asparagus ( see side dish )