01 -
Preheat oven to 375°F and grease a baking dish.
02 -
Lightly steam broccoli for 3 to 4 minutes until tender-crisp, then set aside.
03 -
In a saucepan, melt butter over medium heat. Add onion and cook until softened.
04 -
Whisk in flour and cook for 1 minute. Slowly add milk while whisking constantly until thickened. Season with salt, pepper, and paprika. Stir in 1½ cups of cheddar cheese until melted.
05 -
In a large bowl, combine cooked rice, steamed broccoli, and cheese sauce. Mix well, then transfer the mixture to the prepared baking dish.
06 -
Top the casserole with the remaining cheddar cheese and bake for 30 to 35 minutes, or until bubbly and golden.