# What You 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 - ½ cup sour cream
08 - 1½ cups shredded sharp cheddar cheese
09 - ¼ teaspoon ground black pepper
10 - ½ teaspoon salt
11 - ¼ teaspoon ground nutmeg (optional)
→ Topping
12 - 1 sleeve Ritz crackers (about 30 crackers), crushed
13 - 3 tablespoons unsalted butter, melted
# Directions:
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 thoroughly and set aside.
03 - Melt 2 tablespoons of butter in a medium saucepan over medium heat. Add chopped onion and cook until softened, about 4 minutes. Add minced garlic and cook for an additional 1 minute.
04 - Stir in flour and cook, stirring constantly, for 1 minute. Gradually whisk in whole milk until smooth.
05 - Cook the mixture, whisking continuously, until sauce thickens, about 2 to 3 minutes. Remove from heat and stir in sour cream, shredded cheddar cheese, salt, black pepper, and nutmeg until cheese is fully melted and sauce is smooth.
06 - Gently mix the blanched broccoli with the cheese sauce in a large bowl until evenly coated. Transfer to the prepared baking dish and spread evenly.
07 - Combine crushed Ritz crackers with melted butter in a small bowl. Evenly sprinkle the mixture over the broccoli and cheese.
08 - Bake for 25 to 30 minutes until the topping turns golden brown and the casserole is bubbling.
09 - Allow the dish to rest for 5 minutes before serving to set.