Broccoli Casserole Recipe — The Mom 100

Ingredients

• 6 tablespoons butter ((divided))
• 3 tablespoons all-purpose flour
• Kosher salt and freshly ground black pepper ((to taste))
• 1 cup whole milk or half-and-half
• 1 cup chopped onions
• 1 cup chopped mushrooms
• 3 pounds broccoli florets ((about 10 to 12 cups))
• 2 cups chicken or vegetable broth
• 2 cups sour cream
• 2 cups shredded cheddar cheese