Brake off the bottoms of the asparagus. Cut the onion, bell pepper in big cubes. Slice the mushrooms. Put into aluminum tray and add salt and pepper to taste. Give a splash of olive oil. Put on BBQ for approximately 20 to 30 minutes, cover with foil. 10 minutes before time give it a splash of red wine vinegar.
If using the oven, bake for approximately 35 to 45 minutes. Cover with foil and give it 10 minutes before time a splash of red wine vinegar. It will give it a savory taste!
Keyword Asparagus, Bell Pepper, Mushroom, Red Onion