A sheet-pan dinner, also known as a traybake in other countries, is an easy and time saving option during the week. The NY Times cooking section had a recipe for sheet-pan roasted mushrooms and spinach and I wanted to…
1. add a protein and
2. compare the sheet pan to the air fryer
‘What would happen if I added the spinach for the last few minutes in the air fryer?’ I remembered seeing a recipe for sheet pan sausages and thought ‘What would happen if I added sausages to the mushrooms and spinach in the sheet pan?’
Hmm…It would be a one pan dinner. Something we all could use during the week.
I am going to share this with the Fiesta Friday group party. It’s Fiesta Friday # 371 and I am the co-host with Angie. Come on over to read the other posts with creative recipes, craft or gardening ideas.
So, here it is from start to finish.
Ingredients:
- 1 lb. cremini mushrooms (or any combination that looks interesting and wonderful), trimmed and sliced thickly
- 1 small onion, sliced into wedges
- 4 garlic cloves, peeled and chopped finely
- 2 tablespoons olive oil, plus more as needed (I only used 1 tablespoon for the air fryer)
- 4 Italian sausages or any kind that are your favorite
- Kosher slat and freshly ground pepper
- 5-6 large handfuls of baby spinach – about 2 6-oz containers
Method:
- In a large bowl toss the mushrooms, onion, garlic with the olive oil until everything is evenly coated
For the oven:
- Preheat your oven to 425 degrees F. Line a sheet pan with foil or parchment paper.
- Spread the mushrooms and onion on the lined pan, nestle the sausages among them. After 10 minutes, turn the sausages over.
- Roast for 20 minutes total.
- Then add the spinach to the sheet pan (if not using sausages you may want to add a bit more oil to coat the spinach), tossing with the mushrooms and roast until wilted, about 5 more minutes total. Turn and toss the spinach and mushrooms after 3 minutes. Serve hot or at room temperature.
Note: we found that the sausages added enough additional oil that none was needed.

Mushrooms, onion, and sausages – before

Mushrooms, onion, and sausages – after
For the air fryer:
- Set the air fryer to 370 degrees F for 20 minutes (see my post about air fryer mushrooms here)
- After 15 minutes add the spinach and toss to combine, you may need to add a spritz of olive oil.
- After 3 minutes, toss again.
I didn’t use the sausages in the air fryer although there is no reason they wouldn’t work.

Air fryer spinach and mushrooms
And here are the ones cooked on the sheet pan:

Sheet pan spinach and mushrooms with sausages
Both methods were easy and resulted in a delicious side dish or meal. My husband preferred the sheet pan dinner, he found the mushrooms meatier. I liked the slight crispness and lighter air fryer dinner. Without the sausages this would make a delicious vegetarian/vegan dinner, serve it with polenta or another starch. Leftover mushrooms and spinach made a lovely filling for an omelet.

Air fryer spinach and mushrooms

Sheet pan spinach and mushrooms with sausages