Why it works: Onion and thyme are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 11,171 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Parmesan-stuffed Onions
Ingredients
Directions
Parboil the onions
Place onions in a medium saucepan, cover with water, and bring to a boil.
Cover and cook for 10 minutes.
Drain and cool.
Stuff and bake
Cut the onions in half and place them in a large shallow skillet.
Mix bread crumbs, salt, thyme, and 1 tablespoon Parmesan cheese.
Spoon 1 tablespoon of the mixture on top of each onion half.
Drizzle oil over the crumb mixture, and sprinkle with the remaining 1 tablespoon Parmesan cheese.
Cover the bottom of the skillet with 1 inch of water.
Cover the pan and cook over medium heat for 25 minutes, occasionally spooning pan liquid over the onions. Add additional water if liquid evaporates.
Nutrition, whole recipe (rough)
Counts 6 of 8 ingredients. The other 2 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 6 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Olive Oil | 1 tbsp (14g) | 119 |
| Parmesan Cheese | 1 oz (28g) | 110 |
| Onion | 1 medium (110g) | 44 |
| Thyme | 1 tsp dried (1.4g) | 4 |
| Salt | 1 tsp (6g) | 0 |
| Leaf | not in our table | 0 |
| Salad | not in our table | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
Steps grouped into stages for easier reading; the method is the source's own.
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.
-
Onion + thymetop 7% of all pairsSmell alikemoderateCooked together11,171 recipes
Shared aroma: coumarin (sweet, hay).
-
Bread + parmesan cheesetop 15% of all pairsSmell alikemoderateCooked together577 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Onion + parmesan cheesetop 15% of all pairsSmell alikemoderateCooked together3,717 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Onion + breadtop 15% of all pairsSmell alikemoderateCooked together8,676 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Bread + thymetop 17% of all pairsSmell alikemoderateCooked together1,993 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Onions
- Become tender after parboiling and soften further while steaming in the covered skillet.
- Bread crumbs
- Form a crisp, golden topping that holds the stuffing in place on each onion half.
- Parmesan cheese
- Adds savory, salty flavor and helps the topping brown during cooking.
- Salad oil
- Carries fat over the crumbs so they toast evenly rather than drying out.
The step that matters
Keep water in the skillet during the covered cook. The onions cook partly by steaming in the water at the pan bottom. If the water boils away, the onions can scorch and dry out before they are tender, so add water as directed and spoon pan liquid over them.
Swap the thyme
How well each one fits the dish's main ingredients (onion, bread, parmesan cheese):
- Garlicfits better
- Celeryfits better
- Capersfits about as well
- Thymethe original
Fit is the average pairing score against onion, bread, parmesan cheese. 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.
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