Roasted Asparagus, Mushrooms and Onions

"One of our favorite ways to make asparagus. We love all of the ingredients and this is great for company because you can make it up ahead of time and just pop in the oven when ready. This can easily be scaled down from 12 servings. From"
photo by justcallmetoni photo by justcallmetoni
photo by justcallmetoni
photo by justcallmetoni photo by justcallmetoni
photo by Bev I Am photo by Bev I Am
Ready In:




  • Heat oven to 425ºF.
  • Line two 15 1/2x10 1/2-inch rimmed baking sheets with foil.
  • Gently toss all ingredients in a large bowl until vegetables are coated with oil.
  • Spread evenly on baking sheets.
  • Roast 20 to 25 minutes stirring once until vegetables are slightly charred and tender.
  • If preparing the asparagus and onion ahead, store them in a plastic bag large enough to accommodate the rest of the ingredients so you won't have to dirty a bowl.

Questions & Replies

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  1. itsnevrenough
    Awesome. Cooked for just the two of us, so used a pound of asparagus, an 8 oz package of mushrooms, and a whole yellow onion. I coated them with a tbsp. of olive oil, kosher salt and cracked pepper, then roasted for about 18 minutes, turning them once. They came out perfectly!
  2. RedVinoGirl
    Loved this. Cut the recipe in half and the cooking time was spot in. Definite repeater.
  3. Oolala
    I just made this tonight and didn't measure anything-just right! I liked the combo of veggies. Thanks!
  4. justcallmetoni
    My primary critique of this recipe is there is no way it will feed 12 people, not if at least one enjoys asparagus or roasted vegetables as much as I do. :) I scaled this down to 4 servings and reduced the oil in half. The results were superb - crispy blades of asparagus with perfectly cooked onions and cremini mushrooms. Considered adding some balsamic to the completed dish but really found the flavors stood on their own without any additions. Thanks for a great combination and cooking technique.
  5. Bev I Am
    Wonderful! So simple and so elegantly delicious! I made and directed and would not change a thing. Thank you so much for another wonderful recipe, Lazyme!


  1. Slimer
    I made as directed once. Too much. I halved the recipe then added for that herbal seasoning punch my family felt this recipe was missing: 3 large cloves of fresh garlic, minced or 1 Tbsp bottled. 1.5 tsp fine garlic powder for even coating. A pinch of parsley, chives, rosemary and thyme. Whisked in a measuring cup with olive oil. Left to sit for 15 minutes so the flavors melded. (At this time I prepared the veggies.) Poured over the veggies in a bowl, tossing throughly to coat. Time and temperature were spot on.


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