# What You Need:
→ Vegetables
01 - 1 lb fresh asparagus, trimmed
→ Dairy
02 - 2 tbsp unsalted butter
03 - 2 tbsp 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
08 - 1 tbsp unsalted butter, melted
→ Seasonings
09 - 1/2 tsp salt
10 - 1/4 tsp ground black pepper
11 - 1/4 tsp ground nutmeg (optional)
→ Topping
12 - 1/2 cup fresh breadcrumbs
# Directions:
01 - Preheat the 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 the baking dish.
03 - Melt 2 tablespoons of unsalted butter in a medium saucepan over medium heat. Stir in flour and cook for 1 minute, stirring constantly.
04 - Whisk in whole milk and heavy cream gradually; cook, stirring continuously, until the sauce thickens, about 3 to 4 minutes.
05 - Remove sauce from heat. Stir in half of the shredded Gruyère and all Parmesan cheese. Season with salt, black pepper, and nutmeg if using.
06 - Pour cheese sauce evenly over asparagus. Sprinkle with remaining Gruyère cheese.
07 - Combine fresh breadcrumbs with melted butter. Evenly sprinkle over the casserole.
08 - Bake in the preheated oven for 20 to 25 minutes until the top is bubbly and golden brown.
09 - Allow casserole to rest for 5 minutes before serving.