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Diamond biscuits

Name: Diamond biscuits
Prep time: 1 h 27 min
Cook time: 20 min
Total time: 1 h 47 min
Yield: 25 pieces
Cuisine: French
Ingredients: 100 g butter; 40 g icing sugar; 10 g vanilla sugar; 125 g flour; 50 g granulated sugar; 20 g beaten egg

These round biscuits no doubt get their name from the coating of sparkling sugar crystals around the edge.

74 K 3.8/5 (6 reviews)536502

Duration

1 hour 50 min.

Difficulty

Easy

Last modified on: October 30^th 2026

Step by step recipe Ingredients Duration Nutritional facts Cost Comments Support the site ❤️

For 25 pieces, you will need:

1 100 g butter
2 40 g icing sugar
3 10 g vanilla sugar
4 125 g flour
5 50 g granulated sugar
6 20 g beaten egg
Total weight: 345 grams

Times for this recipe

Preparation

30 min.

Resting

1 hour

Cooking

20 min.

All in all

1 hour 50 min.

Preparation 30 min.

Resting 1 hour

Cooking 20 min.

When should you start or finish this recipe?

If you start now, at , you will finish around : ?.Change start time

To finish around 7pm, you'll need to have started before: .Change end time

Step by step recipe

Step 1 - ⌛ 3 min.

Put into a mixer bowl: 100 g butter, 40 g icing sugar and 10 g vanilla sugar.

Step 2 - ⌛ 4 min.

Mix until the consistency is creamy.

Step 3 - ⌛ 2 min.

Add 125 g flour.

Step 4 - ⌛ 3 min.

Beat again until evenly mixed.

Step 5 - ⌛ 3 min.

Roll the dough into a long sauusage...

Step 6 - ⌛ 1 hour

... and wrap tightly in plastic film.

Even up the cylinder by rolling with your hands on the worktop until nice and even.
Refrigerate for at least 1 hour (this can be made the day before).

Step 7 - ⌛ 2 min.

Preheat the oven to 360°F (180°C).

Put 50 g granulated sugar in a rectangular dish.

Step 8 - ⌛ 2 min.

Lightly dampen the sausage of dough and roll in the granulated sugar, pressing to help the crystals stick.

Step 9 - ⌛ 5 min.

Slice the dough into discs 1/4 inch (1/2 cm) thick and arrange on a baking sheet lined with a sheet of cooking parchment.

Step 10 - ⌛ 3 min.

Use a brush to glaze the tops of the biscuits.

Step 11 - ⌛ 20 min.

Bake for 15-20 minutes.

Step 12

Leave to cool on a wire rack.

Remarks

If you don't have vanilla sugar, you can add the seeds from half a vanilla pod at stage 1.

And to drink?

Keeping: Several days in an airtight tin.

Source: Based on a recipe by Gaston Lenôtre.

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Nutritional information

	Proteins	Carbohydrates	Fats	Calories	Energy
Per 100 g	4 g RDI=6 %	56 g RDI=21 %	25 g RDI=35 %	468 kcal RDI=23 %	1,958 kJ RDI=23 %
Per piece	1 g RDI=1 %	8 g RDI=3 %	3 g RDI=5 %	65 kcal RDI=3 %	270 kJ RDI=3 %
Whole recipe	15 g RDI=22 %	192 g RDI=73 %	87 g RDI=120 %	1,613 kcal RDI=81 %	6,755 kJ RDI=81 %