Stuffed mushrooms bake at 350 to 400°F for roughly 15 to 30 minutes, depending on the recipe. Sweet and Savory Meals says filled caps keep covered in the fridge for up to 2 days, then need about 20 minutes in the oven. So the work can be done long before the turkey goes in.
My Thanksgiving oven is an ordinary home oven, and the turkey gets it first. So I treat appetizers as a scheduling problem before I think about flavor!
Below you’ll find how the fillings compare, how many to buy, and where a tray fits when every rack is spoken for. If you’re building a bigger spread, the Thanksgiving appetizer ideas list has plenty of company for them.
Which stuffed mushroom filling should you make?
Four routes show up again and again in published recipes. They differ in what holds the filling together, and that decides how much you can do ahead of time.
| Filling | What binds it | Best when |
|---|---|---|
| Cream cheese and Parmesan | Cream cheese and Parmesan, with breadcrumbs (Sweet and Savory Meals) or chopped pecans (Crumb) | You want a creamy mound and the longest make-ahead window |
| Sour cream and cheddar | Sour cream, cheddar, mozzarella and dry breadcrumbs, with melted butter drizzled on top (Food.com) | You want a melty, browned top and a looser filling |
| Shallot and breadcrumb | Minced stems cooked with shallot and thyme, then dry breadcrumbs and optional Parmesan (New York Times Diner’s Journal) | A guest avoids dairy or you want a lighter bite |
| Italian sausage | Chopped sausage with casings removed, folded into a cheese filling (Sweet and Savory Meals); Williams Foods pairs it with cream cheese | The mushrooms need to feel like a hearty bite |
Richness varies a lot. Crumb uses 8 ounces of cream cheese for 20 mushrooms, while Sweet and Savory Meals uses 4 ounces for 1½ pounds. Crumb makes the creamy one; the other leans on breadcrumbs for body.
For a holiday, I pick the cream cheese and Parmesan route, because it has a published 2-day make-ahead window. The shallot version suits a guest who can’t do dairy. Skip its optional Parmesan and no cheese is left at all.
Stuffed mushrooms with cream cheese and Parmesan
These proportions follow the Sweet and Savory Meals recipe, which makes 8 servings. The notes on each step are mine.
How many mushrooms to buy
That recipe uses 1½ pounds of baby bellas for 8 servings, which works out to roughly 3 ounces each.
A New York Times Diner’s Journal post figures 5 or 6 ounces per person, but only when the mushrooms stand in for a first course. Next to a full dinner, I’d use the smaller number. For 10 guests, plan on about 2 pounds.
Ingredients and method
- 1½ pounds baby bella mushrooms
- 2 tablespoons butter
- 2 tablespoons diced green onions
- 4 cloves garlic, minced
- ¼ cup plain breadcrumbs
- ⅓ cup freshly grated Parmesan, plus more for topping
- 4 ounces cream cheese, softened
- 2 tablespoons mayonnaise
- 1 teaspoon Italian seasoning
- 2 tablespoons chopped parsley
- Salt and pepper to taste
- Heat the oven to 400°F and line a baking sheet with parchment.
- Wipe the caps clean with a damp paper towel. Don’t soak them, because mushrooms absorb water and release it again in the oven.
- Pop out the stems by pushing them one way, then the other, and chop them fine.
- Cook the stems in the butter with the green onions and garlic for about 5 minutes, until most of the liquid is gone. Let the pan cool for a few minutes.
- Stir in the breadcrumbs, Parmesan, cream cheese, mayonnaise, Italian seasoning, parsley, salt and pepper.
- Fill each cap with a mounded spoonful and set it on the sheet.
- Bake 15 to 20 minutes, until the filling is golden.
The stems are the fiddly part for me. You chop small, then wait for a pan to go dry, and rushing is tempting. Don’t! A wet filling leaves caps sitting in a puddle on the tray.
If you’re out of something, Crumb’s recipe uses olive oil in place of butter and a shallot or onion in place of green onions. For a lower-carb batch, Sweet and Savory Meals leaves the breadcrumbs out or swaps in almond meal.
Fitting stuffed mushrooms into a full Thanksgiving oven
Published recipes disagree more about the oven than about the filling. Food.com bakes at 350°F, the New York Times post at 375°F, and both Sweet and Savory Meals and Crumb at 400°F. Bake times run from 15 to 20 minutes up to about 30.
What does that mean for a crowded oven? A turkey has to rest before carving, and that gap is your window. You get a free oven, even a short one.
Published temperatures center on 375°F. If the sides are in at 350 to 375, a sheet slides in without much negotiation. Expect to add minutes as your oven fills. I can’t give you a number for that, so go by what you see: golden tops.
The New York Times post serves them tepid, which takes the pressure off. Straight from the oven to the table is optional.
If the oven really is spoken for, the air fryer comes up in community threads. This comment is from a thread about a store-bought pack:
“Air fryer baby! Need to get one of them air fryers; my house stays so much cooler now that I’m not running the oven daily.”
– r/aldi (9 upvotes)
I have an air fryer too, but I have no tested time for stuffed mushrooms in it, so I won’t hand you one. Start checking early, and trust the color you see on the tops.
Make-ahead, leftovers, and the freezer
Sweet and Savory Meals fills the caps, covers them with plastic wrap and refrigerates them for up to 2 days. You bake them for 20 minutes when guests are close.
Here is how I split the work when I plan my own schedule:
- The day before: wipe the caps, pop the stems, cook them down and mix the filling.
- Thanksgiving morning: fill the caps, tray them and cover the tray.
- While the turkey rests: bake, then serve warm.
Leftovers keep 3 to 4 days in an airtight container, according to the same recipe, which says to reheat them in the oven or microwave until warm.
The freezer works too. That recipe freezes them before or after cooking, layered with parchment or foil between, for up to 3 months. It gives no bake time from frozen, so try one tray before the holiday, not on it.
Stuffed mushrooms questions
How long do you bake stuffed mushrooms?
Bake them 15 to 20 minutes at 400°F, as Sweet and Savory Meals does, until the filling is golden. Crumb’s cream cheese and pecan version takes 20 to 25 minutes at 400°F. The New York Times shallot version bakes about 30 minutes at 375°F.
What kind of mushrooms are best for stuffing?
Baby bellas, also sold as cremini. Sweet and Savory Meals likes them for their bite size and year-round supply. It says portobellos work but are big, and the author prefers the small ones. The Times post uses ordinary white mushrooms.
What do you serve with stuffed mushrooms?
Sweet and Savory Meals serves them as an appetizer or a side, and the Times post serves them with drinks in place of a first course. For a drinks hour, the cocktail party food ideas list has more finger food. If you’d rather count them as a side, the Thanksgiving side dishes list shows what else shares your plate. Since they eat well tepid, I put them out at the drinks hour, before the main dishes crowd the counter.