Why it works: Mozzarella cheese and parmesan cheese match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,093 recipes. Both carry ethyl 2-methylbutyrate, which smells fruity, apple. The science ↓
Eggplant Au Gratin
Ingredients
Directions
Prepare the eggplant
Brush both sides of eggplant slices with oil.
Place on an ungreased baking sheet.
Bake at 400°F for 8 minutes.
Turn and bake 7–8 minutes longer or until lightly browned and tender.
Cool on a wire rack.
Assemble and bake
Place one eggplant slice in each of two 10-oz. ramekins coated with nonstick cooking spray.
Top each with 2 tablespoons spaghetti sauce and 2 tablespoons mozzarella cheese.
Repeat layers twice.
Sprinkle with Parmesan cheese.
Bake, uncovered, at 350°F for 20–25 minutes or until bubbly and cheese is melted.
Nutrition, whole recipe (rough)
Counts 4 of 5 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 4 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Olive Oil | 1 tbsp (14g) | 119 |
| Parmesan Cheese | 1 oz (28g) | 110 |
| Mozzarella Cheese | 1 oz (28g) | 85 |
| Eggplant | 1 cup cubed (82g) | 35 |
| Sauce | 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.
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Mozzarella cheese + parmesan cheesetop 1% of all pairsSmell alikestrongCooked together1,093 recipes
Shared aroma: ethyl 2-methylbutyrate (fruity, apple).
-
Eggplant + olivetop 2% of all pairsSmell alikestrongCooked together943 recipes
Shared aroma: alpha-pinene (pine, turpentine).
-
Olive + mozzarella cheesetop 7% of all pairsSmell alikemoderateCooked together1,773 recipes
Shared aroma: methyl 2-methylbutyrate (apple, fatty).
-
Olive + parmesan cheesetop 10% of all pairsSmell alikemoderateCooked together4,233 recipes
Shared aroma: ethyl isobutyrate (fruity, ethereal).
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Eggplant + mozzarella cheesetop 12% of all pairsSmell alikemoderateCooked together146 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggplant
- Forms the tender, layered base of the gratin once baked.
- Olive oil
- Carries moisture and helps the eggplant brown lightly in the oven.
- Spaghetti sauce
- Adds moisture and tomato acidity that keeps the layers from drying out.
- Mozzarella cheese
- Melts into a stretchy, bubbly layer that binds the eggplant and sauce.
- Parmesan cheese
- Adds savory flavor and browns on the surface during the final bake.
The step that matters
Cooling the eggplant before layering. Eggplant releases water as it cooks. Letting the slices cool on a wire rack lets excess moisture escape, so the assembled layers stay firm rather than soggy.
Swap the eggplant
How well each one fits the dish's main ingredients (olive, sauce, mozzarella cheese, parmesan cheese):
- Tomatofits better
- Capsicumfits about as well
- Spinachfits about as well
- Eggplantthe original
Fit is the average pairing score against olive, sauce, mozzarella cheese, 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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