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Caramelized Onion and Apple Tarts with Gruyere and Thyme

Every holiday soiree needs an easy and elegant appetizer to keep guests satisfied until the main event. This recipe from Chef Justine Kelly is just the thing: simple, pretty and delicious, with caramelized onions, apples and grated Gruyère cheese atop store-bought puff pastry.

By williamssonoma · From Open Recipes · 12 ingredients
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Caramelized Onion and Apple Tarts with Gruyere and Thyme

Why it works: Onion and chive match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 1,907 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Caramelized Onion and Apple Tarts with Gruyere and Thyme

Ingredients

Directions

Step-by-step directions aren't available for this recipe. See the full recipe at the source →

Nutrition, whole recipe (rough)

611Calories
16 gProtein
40 gFat
51 gCarbs

Counts 11 of 13 ingredients. The other 2 aren't in our nutrition table and add nothing above, so the real totals are higher.

What these numbers assume: 11 portions
IngredientPortion assumedkcal
Olive Oil1 tbsp (14g)119
Cheese1 oz (28g) cheddar113
Butter1 tbsp (14g)102
Apple1 medium (182g)95
Egg1 large egg (50g)78
Sugar1 tbsp (12.5g) granulated49
Onion1 medium (110g)44
Black Pepper1 tsp ground (2.3g)6
Thyme1 tsp dried (1.4g)4
Chives1 tbsp (3g)1
Salt1 tsp (6g)0
Pastrynot in our table0
Waternot in our table0

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By williamssonoma. Recipe from Open Recipes.

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.

  1. Onion + chivetop 3% of all pairs
    Smell alikestrong
    Cooked together1,907 recipes

    Shared aroma: decanal (soap, orange peel).

  2. Thyme + peppertop 4% of all pairs
    Smell alikemoderate
    Cooked together11,585 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

  3. Chive + thymetop 5% of all pairs
    Smell alikestrong
    Cooked together580 recipes

    Shared aroma: 1-octen-3-ol (mushroom, earthy).

  4. Onion + thymetop 7% of all pairs
    Smell alikemoderate
    Cooked together11,171 recipes

    Shared aroma: coumarin (sweet, hay).

  5. Butter + cheesetop 8% of all pairs
    Smell alikemoderate
    Cooked together7,962 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

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

Swap the apple

How well each one fits the dish's main ingredients (onion, butter, sugar, cheese, chive, thyme, pepper):

  1. Lemonfits better
  2. Avocadofits better
  3. Limefits better
  4. Applethe original

Fit is the average pairing score against onion, butter, sugar, cheese, chive, thyme, pepper. Candidates are from the same food group and used in at least 100 recipes.