Preheat oven to 400 degrees F (200 degrees C).
Spray the inside of a 9×13 casserole dish with olive oil cooking spray. Place asparagus in the dish and lightly spray spears with cooking spray.
Sprinkle asparagus with Parmesan cheese, sea salt, and garlic powder.
Roast in preheated oven until fork easily punctures thickest part of stem, about 12 minutes.
The best way to keep fresh asparagus for a long while in the refrigerator is to slice off the stems and then stand them in a bowl with a couple of inches of water in the bottom.It keeps for a very long time this way. Add water as necessary.
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