A sheet-pan of roasted oyster mushrooms has a blend of tender and meaty mushrooms mixed with crispy, salty bits that are flavored with garlic powder and fresh thyme.
The roasting time depends on how crispy you want the mushrooms. Start checking the mushrooms after 10 minutes, and take them out of the oven when they have a texture you like.
If you'd like a faster way to cook mushrooms, try my recipe for sauteed oyster mushrooms with fresh garlic.
Roasting Tips
Larger/thicker pieces of mushroom might take longer to roast, while tiny or thin pieces will get crispy fast. This combination of soft, meaty pieces and crispy pieces is actually quite delicious!
If the mushrooms are still wet from being washed they might take longer to roast.
Oyster mushrooms are usually sold in clusters of attached mushrooms. To clean the oyster mushrooms, hold the stems and gently swish the cluster of mushroom caps in cold water to release any dirt. Gently shake off clinging water and gently pat the mushrooms dry with a towel.
Next, pull apart into individual mushrooms. You can do this with your hands, or use kitchen shears to snip the mushrooms free.
Garlic vs Garlic Powder: Fresh garlic might burn in the oven, so it's safer to use garlic powder.