Creamy Dreamy Broccoli Casserole: The Ultimate Comfort!

Ingredients

• 2 lbs (900g) fresh broccoli florets, cut into bite-sized pieces
• 1 tablespoon olive oil (15 ml)
• 1/4 teaspoon salt (1.5g)
• 1/4 teaspoon black pepper (1.5g)
• 1/4 cup (2 oz or 57g) unsalted butter
• 1/4 cup (30g) all-purpose flour
• 2 cups (475 ml) whole milk
• 1/2 teaspoon salt (3g)
• 1/4 teaspoon ground nutmeg (0.5g) (optional)
• 8 ounces (225g) sharp cheddar cheese, shredded
• 4 ounces (115g) Gruyere cheese, shredded (optional)
• 2 tablespoons sour cream (30 ml)
• 1 sleeve (about 35 crackers, 5 oz or 142g) Ritz crackers, crushed
• 4 tablespoons (2 oz or 57g) unsalted butter, melted