Name: Mushrooms Stuffed with Apples and Herbs
Ingredients: 20 large button mushrooms; 1 tablespoon light soy sauce; 2 teaspoons extra-virgin olive oil, divided; 3 teaspoons balsamic vinegar, divided; nonstick cooking spray; 1 small leek, white part only, chopped; 1 stalk celery, minced; 1 red apple, peeled, cored and diced; 2 tablespoons minced parsley; 1/4 teaspoon oregano; 1/4 teaspoon basil; salt & freshly ground black pepper, to taste; 2 teaspoons butter; 1/2 cup whole-wheat bread crumbs; 2 tablespoons grated parmesan cheese; 2 teaspoons vegetable stock

Why it works: Celery and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 6,810 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

Celery + parsleytop 1% of all pairs

Smell alikestrong

Cooked together6,810 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Leek + celerytop 4% of all pairs

Smell alikestrong

Cooked together1,093 recipes

Shared aroma: coumarin (sweet, hay).
Leek + parsleytop 4% of all pairs

Smell alikestrong

Cooked together759 recipes

Shared aroma: trans-2-hexenal (green, leafy).
Olive + parsleytop 6% of all pairs

Smell alikestrong

Cooked together9,649 recipes

Shared aroma: 2,4-decadienal (seaweed).
Mushroom + olivetop 7% of all pairs

Smell alikemoderate

Cooked together4,571 recipes

Shared aroma: trans,trans-2,4-nonadienal (fatty, green).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Button mushrooms: Act as the edible shell that holds the filling and softens as it bakes.
Whole-wheat bread crumbs: Absorb moisture and bind the filling so it holds its shape in the caps.
Parmesan cheese: Adds savory, salty flavour and browns on top as it bakes.
Butter: Adds richness and carries flavour through the bread crumb filling.
Apple: Adds natural sweetness and a soft, moist texture to the filling.
Balsamic vinegar: Adds acidity and tangy depth, and helps the tops brown during baking.

The step that matters

Stuffing and baking at 450 degrees. Mushrooms hold a lot of water, and an overfilled cap or an oven that is not fully hot can leave the shells soggy and the filling pale. Filling each cap with a slightly rounded tablespoon and starting in a fully preheated oven helps the mushrooms cook through and the top brown.

Swap the apple

How well each one fits the dish's main ingredients (mushroom, sauce, olive, vinegar, leek, celery, parsley):

Lemonfits better
Limefits better
Avocadofits better
Applethe original

Fit is the average pairing score against mushroom, sauce, olive, vinegar, leek, celery, parsley. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

Ingredient	Portion assumed	kcal
Flour	1 cup (125g) all-purpose	455
Olive Oil	1 tbsp (14g)	119
Parmesan Cheese	1 oz (28g)	110
Butter	1 tbsp (14g)	102
Apple	1 medium (182g)	95
Onion	1 medium (110g)	44
Mushroom	1/2 cup sliced (35g)	15
Soy Sauce	1 tbsp (15ml)	9
Celery	1 stalk (40g)	6
Black Pepper	1 tsp ground (2.3g)	6
Oregano	1 tsp dried (1.8g)	5
Vinegar	1 tbsp (15ml) distilled	3
Parsley	1 tbsp chopped fresh (3.8g)	1
Basil	5 leaves fresh (2.5g)	1
Salt	1 tsp (6g)	0

Mushrooms Stuffed with Apples and Herbs