Appetizers · Main Dishes · Side Dishes · Veggies

Roasted Portobellos Stuffed with Mashed Potato and Onion and Balsamic (Vegan)

This is a simple ‘clean’ recipe that makes you realize why you can love clean eating.

The recipe is under the “Main Dishes”, “Sides” and “Appetizers”.   As a main dish, serve with a salad and voila!   Serve as a side with a beyond meat burger or vegan sausage.   Or make it into an appetizer.  Just cut it in half or into quarters and serve on a small plate with a fork and a knife.

We start out with the humble potato, the mushroom and the humble onion.


And ends in a magical creation.

We already know that everyone loves mashed potatoes.  Add some some fried onions, a touch of olive oil,  salt and pepper and you’ve got a whole new level of mashed potatoes.  I used white potatoes because they don’t seem to need as much liquid when mashed.  Use a hand blender or immersion blender to get the creamiest mixture.  Place it on a Portobello Mushroom and bake it until the potato gets a nice crispy skin and you’ve got a main dish that everyone will love.


Here is what the creation will look like before it hits the oven.


This recipe is simple enough for a beginner. Just make sure you boil the potatoes until soft enough that you can easily put a fork in them.  As well, make sure the final product is well roasted in the oven, with some brown forming on the peaks of the potatoes, as pictured below.

Heath Benefits

As far as health factors go, when you look at the nutrition in a potato, you can see why it kept the Irish alive for so long. Rich in B vitamins, with lots of fibre, plus a multitude of essential vitamins and minerals like iron and magnesium.  Mushrooms are a great source of copper and selenium and also combat cancer, inflammation and more.  Onions help build immunity, aid in digestion, diabetes, anemia, hair growth and anti aging.  I didn’t realize how healthy balsamic vinegar actually was until writing this post.   Read about 13 benefits of Balsamic, including pain relief, bone health and relieving cold symptoms.  Olive oil is rich in good fats and antioxidants and is great for heart health, inflammation and more.

Olive Oil Scam

When buying olive oil, make sure you are buying the real deal. You could be purchased a fraudulently labelled garbage oil.  It’s a huge problem that has been addressed by many media outlets including Dr Oz.   See the video here.   If you didn’t know about it already, it’s time you became aware.   Read more here.


How To Do A Reduction

This recipe calls for balsamic reduction.   If you don’t have any on hand, you can use balsamic vinegar to make a balsamic reduction.  More notes found here, just scroll down.



4 medium white potatoes

1/4 cup yellow onion

2 tsp plus more olive oil

4 portabello mushrooms

balsamic reduction

1 tsp Himalayan or sea salt

1/2 tsp pepper


Heat oven to 375 degrees
Peel and cut potatoes into small pieces and place in a medium pot of boiling water.  Peel and cut the parsnip and put it in the same pot.   Boil until very soft.

In the meantime, cut up the onion and place in a bit of oil in a frying pan.  Cook until the onions are translucent.

Drain the potatoes and parsnips as soon as they are done.   Place them back in the pot, with the stems of the portabellos, 2 tsp olive oil, and add salt and pepper and puree with a hand blender (or immersion blender).

Divide the mix into 4 equal portions and place on the top of the mushroom caps.  Place in the oven for about 1/2 an hour.

Serve immediately but with a warning that filling will be hot!


2 thoughts on “Roasted Portobellos Stuffed with Mashed Potato and Onion and Balsamic (Vegan)

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