# What You'll Need:
→ Custard Mixture
01 - 3 large eggs
02 - ¾ cup whole milk
03 - ¼ cup heavy cream
04 - 1 tablespoon granulated sugar
05 - ½ teaspoon kosher salt
06 - ½ teaspoon ground black pepper
07 - ½ teaspoon Dijon mustard (optional)
→ Bread
08 - 8 slices brioche or challah bread, about ½ inch thick
→ Cheese Filling
09 - 8 slices Gruyère or sharp cheddar cheese, or a combination
→ For Cooking
10 - 2 tablespoons unsalted butter
11 - 1 tablespoon neutral oil, such as canola
# How to Make It:
01 - In a shallow bowl, whisk together eggs, whole milk, heavy cream, sugar, salt, pepper, and Dijon mustard until smooth and combined.
02 - Lay 4 slices of bread on a flat surface, place 2 cheese slices on each, then cover with remaining bread slices to form sandwiches.
03 - Warm a large nonstick skillet or griddle over medium heat, add 1 tablespoon butter and ½ tablespoon oil, swirling to coat the pan evenly.
04 - Dip each sandwich into the custard mixture, coating both sides evenly without allowing the bread to soak through.
05 - Place custard-coated sandwiches in the skillet and cook for 3 to 4 minutes per side, pressing gently, until golden brown and cheese is melted; cook in batches adding more butter and oil as needed.
06 - Transfer sandwiches to a cutting board, allow to rest for 2 minutes, then slice and serve warm.
