Preheat the oven to 400°F. Grease or spray a square baking dish (8 inch) with nonstick cooking spray and set it aside.
Wash and add the broccoli to a microwave-safe bowl and pour ¼ cup of water to the bowl.
Microwave the broccoli for 3-4 minutes until it becomes crisp-tender. Drain the broccoli by placing it in a colander.
Transfer the broccoli to a prepared baking dish. Pour the cream of mushroom soup over the broccoli. Toss to coat if desired.
Top the broccoli mixture with cheddar cheese and bake for 15-20 minutes, or the cheese is melted and lightly golden brown.
