Mushroom soup with buckwheat

Name: Mushroom soup with buckwheat
Prep time: 11 min
Cook time: 21 min
Total time: 32 min
Yield: 4 servings
Cuisine: Croatian
Ingredients: 150g Mushrooms; 50g Buckwheat; 4 tbs Vegetable Oil; 40g Onion; 2 cloves Garlic; 1 Bay Leaf; 1tbsp Vegetable Stock Cube; 50 ml Sour Cream; Dash White Wine Vinegar; Top Parsley

By The Spice & Simmer Kitchen · Published May 3, 2026

A one-pot Side recipe with Croatian flavors, built for busy weeknights when you want real food without a sink full of dishes. Comes together in roughly 47 minutes, serves about 4, and uses ingredients you can find at any normal grocery store. The technique is simple: build a base in your pot, layer in the main ingredients, simmer until everything has had time to talk to each other, and serve straight from the pan. If you're cooking for picky eaters, this one tends to land — the flavors are recognizable, the texture is comforting, and there's nothing weird hiding in the ingredient list. Perfect for the kind of evening where you want dinner on the table by 7pm and the kitchen empty by 7:30.

Ingredients

Makes 4 servings · 32 min total

150g Mushrooms
50g Buckwheat
4 tbs Vegetable Oil
40g Onion
2 cloves Garlic
1 Bay Leaf
1tbsp Vegetable Stock Cube
50 ml Sour Cream
Dash White Wine Vinegar
Top Parsley

Step-by-step instructions

Chop the onion and garlic, slice the mushrooms and wash the buckwheat.
Heat the oil and lightly sauté the onion.
Add the mushrooms and the garlic and continue to sauté.
Add the salt, vegetable seasoning, buckwheat and the bay leaf and cover with water.
Simmer gently and just before it is completely cooked, add pepper, sour cream mixed with flour, the chopped parsley and vinegar to taste.

Why this works on a weeknight

Mushroom soup with buckwheat lands at about 32 minutes total — a little longer than our 30-minute target, but most of that time is hands-off simmering, which is why it earned a spot in our Quick Soups & Stews collection. The technique is forgiving, the ingredient list is grocery-store standard, and the active cooking time is short enough that you can answer a text message in the middle without ruining dinner.

Cleanup notes

This is a single-pan recipe, so the cleanup is exactly one pan, one cutting board, and one knife. While the dish rests, fill the pan with hot soapy water — by the time you are done eating, the residue lifts off with a single pass of a sponge. Skip the steel wool on cast iron; a stiff brush and warm water are all you need to keep the seasoning intact.

Make-ahead and leftovers

Leftovers keep covered in the fridge for up to three days. Reheat in a dry pan over medium-low with a splash of water or stock to loosen the sauce. Mushroom soup with buckwheat actually improves overnight as the flavors keep talking to each other, so doubling the recipe and packing tomorrow's lunch is a high-leverage weeknight move.

Filed under 🥣 Quick Soups & Stews Side Croatian Warming Soup