Stuffed Portobello Mushrooms Recipe (2024)

Nutritional yeast adds a cheesy flavour to dishes. It's usually used to add cheese flavour to vegan dishes. Since there are no milk or egg ingredients in this recipe I'm assuming that's what it's for. If you don't have it already I would just add some parmesan or other grated cheese.

I made them as an appetizer using smaller mushroom caps and the were a big hit. Otherwise no modifications. Proof that there is no need for sausage or crab to satisfy your guests. I will definitely be making the entry style next time.

Does "upside down" mean with the gills up? Seems easier to "brush the mushrooms with the mixture" if it means domed side up.

Rookie question: "place the mushroom caps on it, upside down"--what is upside down here? Gills down on sheet or up in the air?

I just want to make sure before trying the recipe. Is the spinach chopped and tightly packed enough to fill 2 cups (2 cups chopped and tightly packed spinach) or is it 2 cups of spinach that are then chopped and tightly packed as called for in the recipe (2 cups spinach, chopped and tightly packed)? It does make a difference.

I've never used it myself and wondered the same thing. Wikipedia has a couple statements that might help: (1) "It is a significant source of some B-complex vitamins, and contains trace amounts of several other vitamins and minerals. Sometimes nutritional yeast is fortified with vitamin B12," and (2) "Nutritional yeast has a strong flavor that is described as nutty, cheesy, or creamy." This helps give an idea of what's missing (or what to replace) if not using it.

Infinite possibilities for creativity here. I added chopped prosciutto to the shallots/garlic/rosemary mixture and let it sizzle for a minute or two. It gave the finished dish a little more depth.

I think 'upside down' is gills up.

Delicious! I omitted the nutritional yeast and used about a half cup of bread crumbs which were crushed up homemade seasoned croutons. I topped them with shredded gruyere cheese the last five minutes of baking.

Not necessary.

If you cook the mushrooms first, liquid will pool in the mushrooms and that can be drained out and used for the liquid in the spinach mixture. It is delicious. I also used thyme instead of rosemary the second time I made it and liked it. A little parmesan on top is really good too.

Made this for dinner this evening, with a few modifications. I halved the recipe, used thyme instead of rosemary and omitted the yeast. I also added a topping of panko, grated parm and a dab of olive oil. It was excellent. I'll definitely be making this again!

Made this tonight as a trial run for a vegetarian thanksgiving. It’s delicious! I added the mushroom stems to the filling as not to waste them. I also added extra bread crumbs and nutritional yeast as a crunchy top. We loved it and will make it as our main dish on thanksgiving with some mashed potatoes and roasted veggies.

I wish I had read the notes before I started cooking. I now believe that "upside down" means gills up, but I did not think that when I set out to make this recipe. So, I would not call what I made "stuffed" rather, "piled on top." Next time, gills up. Otherwise, tasty. I sprinkled parmesan cheese on top which, reading the notes, was a good substitute for the nutritional yeast I don't have.

I made this for just the two of us; my mushrooms were smaller than some portobellos I’ve seen. I had some leek to use up, so I used leek sliced thinly and some chopped red onion in lieu of shallots. Canned beans, but otherwise followed recipe and it was delicious! Came together pretty quickly.

Crumble up some Spam and include it with the stuffing -- wonderful stuff.

I didn’t have white beans or rosemary so I subbed lentils and mint. Seasoned the lentil water. I toasted and seasoned the breadcrumbs. And I added in lemon zest and red wine vinegar to the filling. I could eat this filling as a spread with crackers or pita chips, it’s so good.

I followed step one and then improved the rest a bit, as I was planning to use a rice-spinach mixture w/o beans, nutritional yeast, parsley, or shallots (subbed white onion). Diced the stems and included an umami blend when sauteeing the (doubled) spinach in my dutch oven; mixed all in the dutch oven, then stuffed and topped with breadcrumbs and grated parm. Hubs loved, and I have to say this is rather easy, delicious, and satisfying for a weeknight dinner for two!

W'mushrooms up-side-down is the opposite of the way they GROW!

My second time fixing these - we love them! I pretty much followed the recipe. I took the gills off with a spoon and baked them gill side up. I also chopped up the stems and added this to the shallots as they were cooking. The first time I had fresh Rosemary and dried parsley - the second time fresh parsley and dried herbed de Provence. Delicious both times!!!!

This was good, not great. Super easy to pull together, though, and it could be the base of a really delish dish. I think next time some more herbs and maybe I'll add some dairy (goat cheese) for a tart play on it.

Can any of this be made ahead of time?

Used red lentils instead of beans--OK. Frozen chopped spinach.

A few tips to make this tastier, building on other's notes, and less to clean:add a grated garlic clove to the vinaigrette to top the mushrooms;use a 12" frying pan and add a good dollop of tomato paste to the garlic/shallot mix, cook a bit, then mix in the beans thoroughly and cook a few minutes, add strips of prosciutto, add the spinach and rest of ingredients - no need to dirty a bowl;) quite delicious even without nutritional yeast.

Perfect template for a work-with what you have meal. I imagine it would be delicious as written - but also great working with what I could scrounge up in my veggie drawer. Roasted some asparagus, peppers, onions, then added them to the sautee. Swapped various things for shallots and parsley. The cannellini, rosemary and mushrooms are lovely together. And the nutritional yeast makes it next level...

Tim says ok not to peel, but he always de-gills with a spoon.

These were just meh for us. Considering the effort and the lackluster result and response, I will pass on this one.

Left out the bread crumbs but added parmesan cheese. Also added tomato sauce on top to give some moisture