Preheat your oven to 350°F (175°C) and grease a 3-quart baking dish.
Microwave broccoli and 2 tablespoons of water in a large bowl, covered, for about 5 minutes, stirring once; drain.
In a skillet over medium heat, melt the butter. Add celery, onion, and garlic, cooking until tender (around 3-5 minutes).
Stir in the mushroom and chicken soups along with the milk; warm through.
Combine the cooked vegetables with the broccoli in the bowl.
Mix in the cheese, mustard, paprika, pepper, and rice until fully incorporated. Transfer to the prepared baking dish.
For the topping, blend panko with remaining melted butter. Sprinkle over the rice mixture.
Bake for 30-40 minutes until golden and bubbling.
Serve and savor!
Discover amazing recipes from around the world