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Roasted Buckwheat with Mushrooms – Polish Kasha

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Roasted buckwheat with mushrooms – a delicious Polish recipe for kasha with onions and lots of herbs.

Roasted Buckwheat with Mushrooms and Onions – Polish Kasha

After one year entirely dedicated to Romanian food, I am starting another Eastern Europe recipes short series today. This time I will show you some wonderful Polish recipes.

Why Poland? Well, we spent a week in Poland during the kids’ autumn holidays at the beginning of October last year and I liked the food soooo much, I just had to try to recreate some or better said almost all of the delicious dishes we had there, at home.

And because there were quite a few of them I wanted to cook myself, I decided to make a blog series out of it. Maybe you would like to try these delicious and super easy to make puff pastry croissants filled with jam, these Polish meatballs, or this amazing Bezowy or meringue cakes, which is one of the best cakes ever.

Roasted Buckwheat with Mushrooms and Onions – Polish Kasha

What is Kasha?

I am starting with this roasted buckwheat recipe or kasha because this is a dish we had for breakfast in the hotel a couple of times. It would have never occurred to me to serve such a dish for breakfast, but there it was: a rather dark (almost black) heap of nondescript something with bits of mushrooms and onions in it, in the middle of all the other breakfast foods.

Despite the looks, this kasha with mushrooms and onions was the best tasting dish we had in Poland. And that is saying a lot, considering that all the food we had there was delicious!

Kasha is a porridge made from buckwheat or other grains, like wheat, pearl barley, or semolina, for instance. In the US, when referring to kasha people mean porridge made with buckwheat groats, but otherwise (in Eastern Europe), there are lots of types of kasha.

Kasha actually means “groats” and not buckwheat, like I used to think.

Roasted Buckwheat with Mushrooms and Onions – Polish Kasha

Roasted or unroasted buckwheat?

  • You can buy buckwheat either roasted or unroasted. Sometimes the issue is specified on the packet, but unfortunately not always.
  • Most recipes I cooked with buckwheat ask for the roasted kind, so I did actually searched the internet for instructions on roasting buckwheat myself. I had just assumed that, unless specified on the packet, it would be unroasted.
  • But, apparently, I was so wrong and spent time roasting groats that were already roasted…
  • Most buckwheat that you would find in a regular store is already roasted and usually, the packet will only mention anything if it is raw. I wish I had known that before…
  • The best and easiest way to tell if the groats are roasted or not is by looking at them: raw grains have a very light color, while the roasted ones are brown and crunchier if you bite on them… That easy!
  • As all buckwheat I have ever bought was very brown, I know now that it had always been roasted. 🙂

Why toast buckwheat with eggs?

  • A commonly asked question.
  • The egg helps separate the groats, and that gives the kasha its specific consistency.
  • You will not really be able to taste the eggs.
Roasted Buckwheat with Mushrooms and Onions – Polish Kasha

More buckwheat recipes:

Did you buy a bag of roasted buckwheat to make kasha with mushrooms and onions? And you don’t know what to cook with the rest of it?

Vegan Buckwheat Salad

Vegan Kasha Recipe

Buckwheat Soup with Vegetables


Buckwheat Bread – made with the flour

toasted buckwheat with vegetables in a blue bowl

Roasted Buckwheat with Mushrooms – Polish Kasha

Roasted buckwheat recipe with mushrooms – a delicious Polish recipe for kasha with onions and lots of herbs.
4.62 from 50 votes
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Course: Main Dish
Cuisine: Polish
Prep Time: 10 minutes
Cook Time: 30 minutes
Total Time: 40 minutes
Servings: 4
Calories: 223kcal
Author: Adina


  • 150 g/ 5.3 oz/ 3/4 cup roasted buckwheat groats Note
  • 1 egg
  • 450 ml/ 15.2 fl.oz/ a bit less than 2 cups chicken stock or vegetable broth
  • 3 small onions
  • 2 tablespoons butter divided
  • 1 tablespoon olive oil
  • 250 g/ 8.8 oz brown mushrooms
  • fine sea salt and freshly ground black pepper
  • a small bunch of dill
  • some parsley less than dill


  • Beat the egg lightly in a bowl. Add the buckwheat and mix well.
  • Heat a nonstick pan without any fat, place the buckwheat into the pan and cook for about 3-4 minutes until all the corns are dry and separated.
  • In the meantime slice the onions thinly.
  • Remove the buckwheat from the heat and transfer it to a small saucepan. Add the chicken stock or vegetable broth, bring to a boil, turn the heat down and simmer for about 15 minutes or until the buckwheat is soft and the stock has been absorbed.
  • Heat 1 tablespoon butter and the oil in the pan and cook the onions on low heat for about 15 minutes or until they are very soft and deeply golden. Stir often and don't let them catch. I added two small splashes of water in between, the onions were threatening to catch and I didn't want to add more butter.
  • Clean the mushrooms with kitchen paper and slice them as well. When the onions are cooked, add the mushrooms and continue cooking until they release their juices and the juices then evaporate, this will take about 5-7 minutes. Adjust the taste with salt and pepper.
  • Add the buckwheat to the pan and stir well to mix. Stir in the second tablespoon butter. Chop the dill and the parsley and add them to the pan. Serve immediately.


Roasted buckwheat has a darker color than raw buckwheat. You will be able to buy it roasted most of the time, especially if buying it in a Russian store.


Serving: 1/4 of the dish | Calories: 223kcal | Carbohydrates: 22g | Protein: 8g | Fat: 12g | Saturated Fat: 5g | Polyunsaturated Fat: 6g | Cholesterol: 65mg | Sodium: 761mg | Fiber: 3g | Sugar: 7g
Tried this Recipe? Pin it for Later!Mention @adinabeck or tag #WhereIsMySpoon!

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Sunday 4th of December 2022

In the beginning, after soaking the buckwheat in egg... do you add the whole egg to the pan or just the soaked buckwheat?


Sunday 4th of December 2022

Hi Phil. Everything, the whole buckwheat-egg mixture.


Tuesday 22nd of February 2022

I love buckwheat kasza and yours looks delicious. One thing I do, to keep it all to one pot, is to cook the onion and mushrooms in a deep saucepan and remove them when they are done. I then toast the buckwheat and egg in the same pan, add some broth, cover and cook the buckwheat. When the buckwheat has absorbed all the liquid, simply stir in the onions, mushrooms an herbs. The steaming buckwheat will heat them right up. Dzięki!


Wednesday 23rd of February 2022

Sounds great! Thank you for the feedback.

Phillip A. Bobrowski

Wednesday 23rd of December 2020

In my search for "authentic" Polish recipes, I came upon one that, through translation, seemed rather vague. As I dove into further, I was pleasantly surprised to discover that the starch for the recipe was buckwheat groats. The recipe? Gołąbki - or as many of you know them, cabbage rolls. In many of today's recipes, they call for rice to be mixed with the meat. BUT, rice was something you would probably NOT find in a Polish kitchen in the 18th and 19th centuries. To add to my surprise, the cabbage leaves used were NOT taken from a head that has been boiled. Fuel for cooking was something that needed to be conserved, so it would NOT be "wasted" just to boil water. The cabbage leaves were taken from whole PICKLED heads of cabbage. When you think about it, why not let some water and salt passively take care of preparing the cabbage. Well, after waiting the 2 months for the cabbage to pickle, I prepared my tray of gołąbki, using that and a buckwheat/meat filling.

WOW! A TOTALLY different, yet intriguing taste. The simple task of pickled cabbage gave these "little pigeons" a tartness that was easily tempered by the the depth of flavor brought around by the buckwheat.

Old World. Old School.

Jenny Caneen

Sunday 2nd of August 2020

I don't use non-stick pans, so for fat I was lucky enough to have duck fat in the fridge. That gives everything an extra richness! I put meatballs and sauce on the side of this lovely dish, and rounded it out with boiled beats (that's pretty authentic, right?). Very tasty dish.


Sunday 2nd of August 2020

Thank you for your feedback, Jenny, I am so glad you liked it! :)


Thursday 6th of June 2019

Just made this today. Its delicious. Love the ideas above of capers or adding a poached egg.


Thursday 6th of June 2019

So happy to hear it, Debbie. Thanks for the feedback.