Gratin de Fruits (Warm Fruit Gratin with Vanilla Custard)

In a gratin de fruits, seasonal fruit is baked until just tender, then finished with a rich custard topping that sets softly around the juices. This French-style warm fruit dessert keeps the fruit recognisable rather than collapsing it into a compote: firm apple and pear bring structure, while clementine adds brightness and acidity. The vanilla cream custard gives a smooth, pudding-like finish, and a short spell under the grill creates the lightly blistered golden top that makes the dish feel generous without being heavy. Serve it warm from the baking dish, spooning over the fruit juices and custard together.
Cuisine style French home-style dessert
Flavor profile Fruity • Creamy vanilla • Lightly spiced
Techniques Baking • Grilling
Key equipment Oven • Baking dish • Whisk
Cooking style Minimal cleanup • Crowd-friendly
Time commitment Under 1 hour

Why this recipe works

  • Soft fruit, set custard: Baking the fruit first allows it to soften and release juices before the custard is added, so the final dessert stays tender rather than watery.
  • Creamy vanilla finish: Double cream and egg create a rich custard that sets gently around the fruit while remaining spoonable in the centre.
  • Balanced sweetness: Firm apples, ripe pears and clementines bring natural acidity and fragrance, keeping the sweet custard from feeling heavy.

Get the most out of this recipe

Ingredient notes

  • Choose firm fruit: Use pears that are ripe but still firm and apples that hold their shape well, so the slices soften without collapsing.
  • Slice evenly: Keep the pear and apple wedges similar in size so they cook at the same rate before the custard is added.
  • Use fresh citrus: Fresh clementine segments add brightness and juice; remove obvious pith to avoid bitterness in the finished gratin.

Timing notes

  • Best served warm: Serve shortly after the brief rest, while the fruit juices are warm and the custard is softly set.
  • Let it settle briefly: A short rest helps the custard finish setting and makes the gratin easier to spoon from the dish.
  • Best on the day: The gratin keeps, but the fruit and custard have the best texture when served freshly baked.

Common mistakes

  • Walking away from the grill: The top can colour very quickly under a hot grill, so watch closely and remove the dish as soon as it is golden and lightly blistered.
  • Over-setting the custard: Cook until the edges are set but the centre still has a slight wobble, unless a fully set custard is needed for food safety reasons.
  • Using overripe fruit: Very soft fruit can break down during the first bake and make the gratin loose rather than neatly spoonable.

Equipment you'll need

Ingredients
Instructions
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  1. Heat the oven to 190°C (375°F). Lightly butter a baking dish.
  2. Peel, core and slice the pears and apples into even wedges. Peel the clementines and separate into segments, removing any obvious pithy bits.
  3. Arrange the fruit in the dish, tucking the clementine segments between the pear and apple. Sprinkle over 40 g of the caster sugar and all the cinnamon.
  4. Bake for 15 minutes, until the fruit is just starting to soften and release juices. The fruit should still hold its shape.
  5. Meanwhile, whisk the eggs with the remaining 20 g caster sugar, then whisk in the double cream and vanilla extract. Whisk just until smooth.
  6. Pour the custard mixture evenly over the hot fruit. Return to the oven for 8 minutes, until the custard is lightly set around the edges but still a little wobbly in the centre.
  7. Switch the oven to the grill on high and place the dish under the grill. Grill for 2 to 4 minutes until the top is golden and lightly blistered, watching closely so it does not burn.
  8. Rest for 3 minutes, then serve warm with a spoonful of the juices and custard over each portion.

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Recipe notes

Tips

  • Keep the fruit slices fairly even so they soften at the same rate and do not collapse before the custard sets.
  • When grilling, keep the dish 8 to 10 cm from the heat and do not walk away; the top can colour quickly.
  • Eggs in desserts may be undercooked for some people; if serving to pregnant people, young children, older adults, or anyone immunocompromised, cook until the custard is fully set and piping hot.

Substitutions

  • Replace Pear with Apple for an all-apple gratin; keep the total amount of fruit the same.
  • Replace Vanilla extract with Vanilla bean paste for a more pronounced vanilla flavour.
  • Replace Caster sugar with Light brown sugar for a slightly caramel note.

Storage

  • Refrigerate up to 2 days
  • Cool, cover and refrigerate. Reheat in a 180°C (355°F) oven for 10 to 12 minutes until piping hot; avoid re-grilling as the custard can split.

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Gratin de Fruits (Warm Fruit Gratin with Vanilla Custard)
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Recipe overview

  • Servings: 4 servings
  • Total time: 40min (15min active)
  • Difficulty: Easy
  • Cuisine: French
  • Allergens:
    Eggs Milk
Beginner friendly Kid friendly

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