Antoni Porowski's Croque Signore | The Drew Barrymore Show

Ingredients

• 4 Tbsp 1/2 Stick of Unsalted Butter
• 1/4 Cup All-Purpose Flour
• 1 1/2 Cups Whole Milk
• 1 Tbsp Dijon Mustard
• 1/4 Tsp Kosher Salt
• Freshly Ground Black Pepper
• 8 1/2-Inch-Think Slices of Rustic Bread
• 6 Oz Thinly Sliced Mortadella
• 8 Oz Thinly Sliced Provolone Cheese
• 1/3 Cup Chopped Pepperoncini Plus more for serving
• 1/3 Cup Thinly Sliced Fresh Basil Leaves
• 1 Tsp Grated Lemon Zest