Mille Crêpe Cake with Diplomat Cream

Ingredients

• 2.75 cups Whole milk (room‑temperature for batter; 2 cups for pastry cream)
• 5 pieces Large eggs (room temperature)
• 6 tablespoons Granulated sugar (for crêpe batter; plus 0.5 cup for pastry cream (listed separately))
• 1.5 teaspoons Kosher salt (1 tsp for batter, 0.5 tsp for pastry cream)
• 1.5 cups All‑purpose flour (sifted)
• 4 ounces Unsalted butter (for batter) (brown the butter, then cool slightly before blending)
• 2 tablespoons Unsalted butter (for cooking crêpes) (melted and brushed in skillet as needed)
• 5 pieces Egg yolks (for diplomat cream)
• 0.5 cup Granulated sugar (for pastry cream)
• 0.25 cup Cornstarch (for thickening pastry cream)
• 2 cups Whole milk (for pastry cream)
• 0.5 bean Vanilla bean (split, seeds scraped, pod retained in cream)
• 6 tablespoons Unsalted butter (for pastry cream) (cut into tablespoon pieces, added off‑heat)
• 1 teaspoon Unflavored gelatin (powder) (sprinkled over 2 tbsp cold water, let hydrate)
• 2 tablespoons Cold water (for gelatin)
• 1 cup Heavy whipping cream (chilled for whipping)

Instructions

1. Brown the butter

   Melt 4 oz (8 Tbsp) unsalted butter in a small saucepan over medium heat. Stir constantly; as the water evaporates the butter will foam, then turn golden‑brown and emit a nutty aroma. When it reaches a deep amber color, remove from heat.

   Time: PT5M

2. Combine crêpe batter ingredients

   In a bowl, whisk together 2 ¾ cups whole milk, 5 large eggs, 6 Tbsp sugar, 1 tsp kosher salt, and 1½ cups sifted flour until just combined.

   Time: PT5M

3. Blend batter and add brown butter

   Using a hand blender, blend the mixture until smooth. While blending, slowly stream the browned butter into the batter, continuing to blend until fully incorporated.

   Time: PT2M

4. Strain the batter

   Pass the batter through a fine‑mesh strainer into a clean container to remove any bits of cooked egg or butter clumps.

   Time: PT2M

5. Rest the batter

   Cover the container and refrigerate the batter for at least 4 hours, preferably overnight, to allow the gluten to relax and the batter to become silky.

   Time: PT4H

   Temperature: 4°C

6. Hydrate gelatin

   Place 2 Tbsp cold water in a small ramekin and sprinkle 1 tsp powdered gelatin over it. Let sit without stirring until the gelatin blooms (about 2 minutes).

   Time: PT2M

7. Whisk yolk mixture

   In the small saucepan, whisk together 5 egg yolks, 0.5 cup sugar, 0.25 cup cornstarch, and ½ tsp kosher salt until pale and smooth.

   Time: PT3M

8. Incorporate milk

   Gradually whisk in 2 cups whole milk, first a small amount to dissolve the yolk mixture, then the remainder, making sure the mixture is uniform.

   Time: PT2M

9. Cook pastry cream

   Add the split vanilla bean (seeds and pod) to the saucepan. Cook over medium heat, stirring constantly, until the mixture reaches a boil and thickens (about 10 minutes). Boil for 15‑20 seconds then remove from heat.

   Time: PT10M

   Temperature: 85°C

10. Add butter and gelatin

    Stir in 6 Tbsp cold butter pieces until melted. Then whisk in the bloomed gelatin; it will melt instantly in the hot cream.

    Time: PT2M

11. Strain pastry cream

    Pass the hot pastry cream through a fine‑mesh strainer into a clean bowl to remove any cooked egg bits or vanilla pod fragments.

    Time: PT2M

12. Ice‑bath cool the cream

    Place the bowl of pastry cream into a larger bowl filled with ice water. Stir constantly until the cream reaches room temperature and thickens (about 5 minutes).

    Time: PT5M

    Temperature: 0‑5°C

13. Whip heavy cream

    In a chilled mixing bowl, whip 1 cup heavy cream to firm peaks using a hand whisk or mixer.

    Time: PT5M

    Temperature: 4°C

14. Fold whipped cream into pastry cream

    Gently fold half of the whipped cream into the cooled pastry cream, then add the remaining half, mixing until just combined and streak‑free.

    Time: PT3M

15. Cook crêpes

    Heat the 10‑inch non‑stick skillet over medium‑high heat (≈180°C). Lightly brush with melted butter. Using a quarter‑cup measure, pour batter into the center, swirl to form a thin, even circle. Cook 1 minute until edges brown, then flip with tongs and cook 30 seconds on the other side. Transfer to parchment‑lined plate, cover with a kitchen towel. Repeat for 20‑21 crêpes.

    Time: PT45M

    Temperature: 180°C

16. Keep crêpes moist

    Stack cooked crêpes between sheets of parchment and a lightly damp kitchen towel to prevent drying.

    Time: PT2M

17. Assemble the cake

    On a cake stand, place the first crêpe. Spread a thin, even layer of diplomat cream (≈1.5 oz) to the edge, leaving a small border. Top with the next crêpe and repeat until all crêpes and cream are used, finishing with a crêpe on top.

    Time: PT15M

18. Chill assembled cake

    Cover the cake loosely with plastic wrap and refrigerate for at least 4 hours (or overnight) so the gelatin sets and layers fuse.

    Time: PT4H

    Temperature: 4°C

19. Brûlée the top

    Sprinkle a thin, even layer of granulated sugar over the top crêpe. Using a kitchen torch, caramelize the sugar until golden and crisp. For extra depth, repeat with a second thin sugar layer.

    Time: PT5M

Nutrition Facts

Calories

225

Protein

4 g

Carbohydrates

30 g

Fat

12 g

Fiber

1 g

Ingredient Substitutions

• Instead of Whole milk: 2% milk, half‑and‑half (for richer batter)
• Instead of Large eggs: Pasteurized liquid eggs
• Instead of Granulated sugar: Caster sugar
• Instead of Kosher salt: Sea salt
• Instead of All‑purpose flour: Cake flour (will make crêpes even softer)
• Instead of Unsalted butter (for batter): Clarified butter (ghee)
• Instead of Unsalted butter (for cooking crêpes): Vegetable oil spray
• Instead of Egg yolks: Pasteurized egg yolk liquid
• Instead of Granulated sugar (for pastry cream): Caster sugar
• Instead of Cornstarch: All‑purpose flour (use double amount)
• Instead of Whole milk (for pastry cream): 2% milk
• Instead of Vanilla bean: Vanilla extract (1 tsp)
• Instead of Unsalted butter (for pastry cream): Clarified butter
• Instead of Unflavored gelatin (powder): Gelatin sheets (1 sheet)
• Instead of Heavy whipping cream: Cold half‑and‑half (less stable)

Equipment Needed

• Hand blender
• Fine‑mesh strainer
• Mixing bowls (2)
• Small saucepan
• 10‑inch non‑stick skillet (CeramiClad)
• Wooden tongs
• Kitchen towel
• Parchment paper
• Quarter‑cup measuring cup
• Whisk
• Offset spatula
• Large bowl for ice bath
• Large mixing bowl (for whipping cream)
• Kitchen torch (optional)
• Serrated knife
• Cake stand or springform pan

Critical Steps — Do Not Skip

• Browning the butter without burning
• Straining the crêpe batter for a smooth texture
• Resting the batter for at least 4 hours
• Cooking the pastry cream to a proper boil
• Incorporating gelatin fully
• Rapidly cooling the pastry cream in an ice bath
• Whipping heavy cream to firm peaks
• Cooking crêpes evenly and preventing sticking
• Evenly spreading diplomat cream between layers
• Chilling the assembled cake for gelatin set
• Caramelizing the sugar topping with a torch

Chef Tips from the Video

• Room‑temperature milk and eggs prevent the butter from solidifying in the batter.
• Browning butter adds a nutty depth that elevates the crêpes.
• Resting the batter overnight yields the most tender, lacy crêpes.
• An ice‑bath cools the pastry cream quickly, preserving its glossy texture.
• Fold whipped cream in two stages to maintain maximum air for a light filling.

Troubleshooting

Storage

Refrigerator: Cover tightly and store up to 3 days.

Freezer: Wrap cake in plastic wrap and foil; freeze up to 1 month. Thaw in refrigerator before serving.

Room temperature: Do not store at room temperature; the cream will spoil.

Make-Ahead Tips

• Prepare the crêpe batter a day ahead and keep refrigerated.
• Diplomat cream can be made 24 hours in advance; keep chilled.
• Cook all crêpes, stack with parchment, and store covered in the fridge.
• Assemble the cake the day of serving, then chill to set.