Classic Broccoli Cheese Rice Casserole (Creamy and Golden) - My Home Made Recipe

Ingredients

• 4 cups (340 g) fresh broccoli florets, cut small
• 2 tablespoons (28 g) salted butter
• 1 small yellow onion, finely diced
• 1 celery stalk, finely diced
• 2 cloves garlic, minced
• 1 can (10.5 oz or 298 g) condensed cream of mushroom soup
• 3/4 cup (180 ml) whole milk
• 1/4 teaspoon paprika
• 1/4 teaspoon dry mustard
• 1/2 teaspoon kosher salt, plus more for broccoli water
• 1/4 teaspoon black pepper
• 2 cups (226 g) shredded sharp cheddar cheese, divided
• 3 cups (480 g) cooked long-grain white rice
• 1 cup (45 g) crushed butter crackers
• 2 tablespoons (28 g) melted butter