What kind of mushrooms work best?
Cremini are my favorite for flavor and sturdiness. White button mushrooms work great too. If you want a bigger, dinner-party vibe, use large mushrooms (large white buttons or baby portobellos) and call it a day.
How do I keep stuffed mushrooms from getting watery?
Mushrooms hold a lot of water. The fix is simple: do not skip sautéing the stems and aromatics until the pan looks mostly dry. Also, avoid soaking mushrooms in water. Wipe them clean with a damp paper towel.
Can I make these vegetarian?
Yep. Swap the sausage for either:
- 8 ounces finely chopped additional mushrooms (cremini, baby bella, or whatever you have), or
- 1 cup chopped walnuts plus 1 tablespoon soy sauce or vegetarian Worcestershire-style sauce for depth.
How to cook the vegetarian swap: Sauté the chopped additional mushrooms (or walnuts) with the onion and stems, and keep cooking until the pan looks mostly dry and everything smells deeply savory. Then proceed as written. Taste and add a pinch more salt if needed since you are losing the sausage seasoning.
Can I prep them ahead?
Absolutely. Assemble up to 24 hours ahead, cover, and refrigerate. Bake straight from the fridge, adding 2 to 4 minutes as needed.
Can I use bacon instead of sausage?
Yes. Cook 6 slices bacon until crisp, chop, and use some of the rendered fat to sauté the onions and stems. Reduce added salt a bit since bacon brings plenty.
How do I know they are done (and safe)?
The tops should be golden, the mushrooms tender, and the filling piping hot. If you want to be extra certain, the center of the filling should reach 165°F (especially important with sausage).