
Earthy portobello mushrooms become fancy little bowls when stuffed with bright spinach and smooth feta cheese. This dish brings together tastes from the Mediterranean with meaty mushrooms, green leafy stuff, and tangy cheese that work so well together. It's filling, good for you, and really makes your taste buds happy.
I stumbled upon this dish at a friend's dinner where I needed something without meat to serve. Everyone was so blown away by these stuffed mushrooms that they asked me for the cooking instructions before they headed home.
Stellar Ingredients Guide
- Portobello Mushrooms: Go for solid caps without marks and closed gills – that's how you know they're fresh
- Extra Virgin Olive Oil: Grab a good quality one that'll give your marinade some real flavor punch
- Fresh Spinach: Pick out vibrant, perky leaves for the best flavor and bite
- Feta Cheese: The authentic Greek stuff gives you that perfect mix of creaminess with a bit of tang
- Fresh Garlic: Look for bulbs that feel heavy and have tight cloves for stronger taste
- Balsamic Vinegar: The darker, more mature kind will give you the fullest flavor
Cooking Directions
- Getting Mushrooms Ready:
- Wipe portobello caps with a damp towel instead of washing them. Take out stems without damaging the cap. Stir marinade items together thoroughly. Let mushrooms soak up all those good flavors.
- Making the Spinach Mix:
- Heat olive oil till it looks slightly shimmery. Cook minced garlic until it's golden and smells amazing. Throw in spinach gradually, waiting for each batch to shrink down. Add salt and pepper to taste.
- Putting Mushrooms Together:
- Place caps on your baking tray with gill side facing down. Bake them first until they start letting out water. Empty out any liquid that collects. Pack each cap full with your spinach mixture.
- Finishing in the Oven:
- Sprinkle broken-up feta on top of filled mushrooms. Bake until cheese starts looking slightly golden. Let them sit a few minutes before you serve them.

Coming from a Mediterranean family, I've always loved how feta can turn plain veggies into something special. My family really likes how the cheese gets a bit golden on top and tastes even better after it's been in the oven.
Tempting Food Matches
These stuffed mushrooms go great with lots of different foods. Try them next to herby quinoa, oven-roasted veggies, or a simple arugula salad with lemon dressing. If you want something heartier, they're fantastic with grilled chicken or a nice piece of fish.
Tasty Variations
Switch things up by using different cheese like soft goat cheese or stretchy mozzarella. Throw in some sun-dried tomatoes or pine nuts for crunch and extra flavor. If you don't do dairy, swap the feta for some cashew cheese or nutritional yeast instead.
Storage Tips
You can keep prepared but uncooked mushrooms in the fridge for a day in a sealed container. After cooking, they'll stay good for about 3 days refrigerated. When you want to eat them again, warm them in a 350°F oven for around 10 minutes.

I've made this dish countless times over the years, and it's one of the most dependable crowd-pleasers I know. There's something about the mix of substantial mushrooms, garlicky spinach, and salty feta that's both fancy enough for company and comforting enough for a regular weeknight dinner.
Frequently Asked Questions
- → Can I prep these mushrooms in advance?
- Totally! Get them ready to go 2-3 days ahead. Keep them in a sealed container, then warm them up in the oven at 350°F for about 10-15 minutes.
- → Should I remove the gills?
- Nope, that's not necessary. Just carefully pull out the stems without breaking the caps.
- → What pairs well with these mushrooms?
- They’re great alongside grilled meats, mixed with quinoa or rice for a veggie plate, or as crowd-pleasing starters.
- → Can I swap feta for another cheese?
- Sure can! Try goat cheese, mozzarella, or parmesan instead. Each brings its own tasty twist.
- → Are these suitable for gluten-free diets?
- Yes, there’s no gluten here. No need for breadcrumbs or flour at all!