# What You'll Need:
→ Vegetables
01 - 5 cups broccoli florets (fresh or frozen, about 2 medium heads)
→ Sauce
02 - 2 tablespoons unsalted butter
03 - 1 small yellow onion, finely chopped
04 - 2 cloves garlic, minced
05 - 2 tablespoons all-purpose flour
06 - 1 cup whole milk
07 - 1/2 cup sour cream
08 - 1 1/2 cups shredded sharp cheddar cheese
09 - 1/4 teaspoon ground black pepper
10 - 1/2 teaspoon salt
11 - 1/4 teaspoon ground nutmeg (optional)
→ Topping
12 - 1 sleeve Ritz crackers (about 30 crackers), crushed
13 - 3 tablespoons unsalted butter, melted
# How-To Steps:
01 - Preheat oven to 350°F. Lightly grease a 9x13-inch baking dish.
02 - Bring a large pot of salted water to a boil. Add broccoli florets and blanch for 2 to 3 minutes until bright green and just tender. Drain well and set aside.
03 - Melt 2 tablespoons butter in a medium saucepan over medium heat. Add onion and cook until softened, about 4 minutes. Add garlic and cook for an additional minute.
04 - Stir in flour and cook, stirring constantly, for 1 minute. Gradually whisk in milk until smooth. Continue cooking and whisking until sauce thickens, 2 to 3 minutes. Remove from heat.
05 - Stir sour cream, cheddar cheese, salt, pepper, and nutmeg into sauce until the cheese is melted and the mixture is smooth.
06 - In a large bowl, gently mix the blanched broccoli with the cheese sauce until evenly coated. Transfer the mixture to the prepared baking dish and spread evenly.
07 - Combine crushed Ritz crackers with melted butter in a small bowl. Evenly sprinkle over the broccoli mixture.
08 - Bake for 25 to 30 minutes until the topping is golden brown and the casserole is bubbling.
09 - Allow the casserole to rest for 5 minutes before serving.
