# What You Need:
→ Vegetables
01 - 1 lb fresh asparagus, trimmed
→ Dairy
02 - 2 tablespoons unsalted butter
03 - 2 tablespoons all-purpose flour
04 - 1 cup whole milk
05 - 1/2 cup heavy cream
06 - 1 cup shredded Gruyère or Swiss cheese, divided
07 - 1/4 cup grated Parmesan cheese
→ Seasonings
08 - 1/2 teaspoon salt
09 - 1/4 teaspoon ground black pepper
10 - 1/4 teaspoon ground nutmeg (optional)
→ Topping
11 - 1/2 cup fresh breadcrumbs
12 - 1 tablespoon unsalted butter, melted
# Directions:
01 - Preheat oven to 400°F. Lightly grease a medium baking dish.
02 - Bring a large pot of salted water to a boil. Add asparagus and blanch for 2 to 3 minutes until tender and bright green. Drain and pat dry. Arrange asparagus in prepared baking dish.
03 - Melt 2 tablespoons butter in a medium saucepan over medium heat. Stir in flour and cook for 1 minute, stirring constantly.
04 - Gradually whisk in milk and heavy cream. Cook while whisking until sauce thickens, about 3 to 4 minutes.
05 - Remove sauce from heat. Stir in half the shredded Gruyère and all the Parmesan cheese. Season with salt, black pepper, and nutmeg if using.
06 - Pour cheese sauce evenly over asparagus. Sprinkle remaining Gruyère on top.
07 - In a small bowl, toss breadcrumbs with melted butter. Sprinkle mixture evenly over casserole.
08 - Bake for 20 to 25 minutes until bubbly and golden brown on top.
09 - Let casserole rest for 5 minutes before serving.