Caramelised French Onion Tart — recipe by katplaystennis
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Caramelised French Onion Tart

by katplaystennis • 2026

Why some badges are missing
  • Not vegan: Butter → try dairy-free butter
  • Not gluten-free: Plain Flour → try gluten-free plain flour
  • Not dairy-free: Butter → try dairy-free butter
  • Not egg-free: Egg → try ground flaxseed and water (1 tbsp ground flaxseed + 3 tbsp water per egg, rested 5 min)
  • Not low-FODMAP: Plain Flour → try gluten-free plain flour
  • Not low-GI / diabetic-friendly: Soft brown sugar → try granulated sweetener (such as erythritol)
  • Not kidney-friendly: Salt → try salt-free herb seasoning (or lemon zest and black pepper)

Based on listed ingredients — always check labels for allergies.

Prep

15m

Cook

30m

Serves

4

Rating

—

Total time · 45m

Ingredients

Kitchen Help

Shopping list

  • 25 g Butter — (1 oz)

  • 4 medium Spanish Onions — thinly sliced

  • 1 tsp Soft brown sugar

  • 1 Tbsp Cognac — [Optional]

  • 1 Egg

  • 2 Egg yolks

  • 60 ml Double cream — (4 Tbsp)

  • Salt — to taste

  • Pepper — to taste

Tools

  • · pan
  • · bowl
  • · oven

Instructions

Step by step

  1. 1

    Melt butter in pan.

  2. 2

    Fry onions very gently for , stirring frequently.

  3. 3

    Stir in sugar. Cook for .

  4. 4

    Sprinkle with flour and cook for , stirring.

  5. 5

    Transfer to bowl and add brandy.

  6. 6

    Beat the whole egg and egg yolks.

  7. 7

    Then stir into onions with cream and salt & pepper to taste.

  8. 8

    Pour in and bake for 30- at 190°C.

  9. 9

    Leave for .

Per serving

serves 4
Calories
346kcal
Protein
7.5g
Carbs
27g
Fat
25.2g
Fibre
1.9g
Sugar
2.4g
Sodium
70mg

AI estimate only — not medical advice. Figures are approximations based on standard ingredient data and may vary by brand, portion size and preparation. Always double-check if cooking for allergies, diabetes, or strict dietary needs.

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How this recipe has changed

Edit on 2026-07-20

Edited 7/20/2026, 6:43:22 PM

Edit on 2026-08-10

Edited 8/10/2026, 4:18:44 PM

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