The Best Strawberry Number Tart

My absolute favorite cake is a Danish strawberry tart. I can never get enough of it, so when I turned 30 a week ago, of course I had to celebrate with a strawberry tart. Since it was a big birthday, I wanted to give my favorite tart a little twist, so I made it as a layer cake instead.

Sweet strawberries, vanilla, chocolate, and a buttery cake base come together in all the ways I love. There’s just something about the combination that never gets old, and this presentation makes it feel extra special.

The vanilla cream is inspired by the talented Nip.

Happy baking <

Tips & Notes:

If the pastries are made over several days, everything except baking the Pâte Sablée bases and combining the vanilla cream with the whipped cream can be prepared in advance. These two steps are best done on the day of serving.

Pâte Sablée:

  • 320 g butter (cold)
  • 60 g icing sugar
  • 565 g all-purpose flour
  • 70 g egg yolks (approx. 3.5 medium egg yolks)
  • a pinch of salt
  1. Place the flour, powdered sugar, salt, and butter (cut into cubes or grated) in a food processor and pulse quickly until the mixture resembles coarse crumbs.
  2. Transfer the dough to a bowl and quickly incorporate the egg yolks. Be careful not to overwork the dough.
  3. Divide the dough into two equal portions, one for each layer of the number/letter. Roll out each portion between two sheets of parchment paper and let them rest on separate baking sheets in the refrigerator for about 1 hour. The dough should be very cold when you take it out.
  4. Cut out the letters (you may want to use a serrated palette knife to remove the cut-out dough from the parchment paper) and place each one on a baking sheet lined with parchment paper or an Air Mat. If you have multiple Air Mats, place one on top of the dough as well, as this will ensure more even baking.
  5. Bake one letter at a time for 15–18 minutes at 175°C / 347°F until the letter is a deep golden brown.
  6. Let the letter cool on the baking sheet. Wait to move the letter until it has cooled completely; otherwise it may crack.
  7. Place the cooled letters on the plates on which the cookies will be served.

Tips & Notes:

  • Grate the butter or cut it into smaller cubes, as this makes it easier to mix with the dry ingredients.
  • Be careful not to over-knead the dough. Only combine until it has a sandy texture and no big pieces of butter remain.
  • Quickly combine the dough with the egg, stopping as soon as it comes together into a ball and the ingredients are fully incorporated.
  • It’s important to let the dough set in the fridge as the cake bases otherwise will spread and lose their shape during baking.

Marzipan Filling:

  • 450 g butter (softened)
  • 450 g caster sugar
  • 330 g marzipan (grated)
  • 150 g eggs (approx. 3 medium eggs)
  • 80 g all-purpose flour
  1. Beat softened butter, sugar, and grated marzipan until light and fluffy. Beat in the egg, then gently fold in the flour.
  2. Divide the dough into two portions. They should be baked one at a time.
  3. Spread half of the marzipan mixture into a baking pan (24×35) lined with parchment paper
  4. Bake one marzipan base for 15–18 minutes at 175°C / 347°F until the surface is golden and the dough is firm.
  5. Repeat with the remaining dough.
  6. Let the marzipan filling cool on the kitchen counter on the parchment paper. Then place them in the refrigerator to set. The marzipan must be completely cold and firm before the letters can be cut out.
  7. Cut out two letters from the marzipan filling (if needed, use a serrated palette knife to remove the cut-out marzipan from the parchment paper).
  8. Place the marzipan filling on top of the Pâte Sablée letters.

Dark Chocolate Layer:

  • 150 g dark chocolate (54%)
  1. Gently melt the chocolate (if needed, over a double boiler).
  2. Using a pastry brush, spread an even layer of chocolate over the top of each marzipan layer.
  3. Place the cookies in the refrigerator so the chocolate can set.

Vanilla Whipped Ganache:

  • 2 vanilla bean pods (or 2 tsp vanilla paste)
  • 375 ml whole milk
  • 75 g egg yolks (approx. 4 medium egg yolks)
  • 45 g caster sugar
  • 40 g cornstarch
  • 300 ml whipping cream (whipped to soft peaks)
  1. Whisk together the sugar, egg yolks, cornstarch, and 75 ml of whole milk in a bowl.
  2. Heat 300 ml of whole milk, the vanilla seeds, and the vanilla bean to a boil in a saucepan.
  3. When the milk reaches a boil, pour it over the egg yolk mixture while whisking.
  4. Pour the cream back into the saucepan and bring it to a boil, whisking constantly.
  5. Once the cream has thickened well, remove the saucepan from the heat.
  6. Transfer the cream (now, ganache) to a bowl and cover the top with plastic wrap. Let it cool completely in the refrigerator for a couple of hours or overnight
  7. Once the ganache is thoroughly chilled, remove the vanilla bean and briefly whisk the ganache.
  8. Whip 300 ml of heavy cream until medium-stiff peaks are formed.
  9. Fold the whipped cream into the vanilla ganache and transfer the mixture to a piping bag fitted with a round tip (I used a size 18).
  10. Pipe the whipped ganache onto the cakes.

Decoration:

  • 2 large trays of fresh strawberries
  • flowers (edible or secured with safety seal / edible wax)
  1. Garnish with fresh strawberries and, if desired, edible flowers.

Cake Layer Overview:

Cake Base:
Pâte Sablée 30 minutes

Creamy Elements:
Marzipan Filling 10 minutes

Mousse:
Vanilla Whipped Ganache 25 minutes

Recipe Details:

Skill Level: Beginner

Categories: Seasonal, Tarts

Yield & Time:

Servings / Yield: 15–18 slices

Total Active Working Time: 1 hour & 5 minutes
Approximate hands-on time only. Excludes weighing ingredients, baking, cooling, freezing, resting and assembly time, as well as the time required to prepare chocolate decorations.

This recipe may include affiliate links.

troubleshooting guide

Cake Base

Issue Cause Fix
  • Tart dough shrinks while baking
  • Dough was overworked
  • Chill dough thoroughly
  • Dough didn’t rest enough in the fridge
  • Avoid over-kneading. Stop kneading when the dough comes together like a ball
  • Tart shells puff up during baking
  • No docking or blind baking
  • Dock dough with a fork and use baking beans if needed
  • Edges are not clean
  • Dough not properly chilled or trimmed
  • Trim edges after chilling and before baking
  • Dough is too crumbly
  • Butter not fully incorporated or dough too dry
  • Ensure butter is evenly mixed and dough holds together when pressed
  • Tarts are not crispy
  • Underbaked dough
  • Bake the tarts until they have a golden caramelized color
  • Tarts are dry
  • Overbaked dough
  • Reduce baking time

Creamy Element

Issue Cause Fix
  • Filling sinks in the middle
  • Oven temperature too low or filling underbaked
  • Bake until the center is fully set and lightly golden and check oven temperature with a thermometer
  • Filling cracks on top
  • Oven too hot or baked too long
  • Lower oven temperature slightly and cover tart edges with foil if browning too fast
  • Filling is greasy
  • Butter too warm or overmixed
  • Use soft butter not melted and mix just until combined
  • Filling is dense
  • Overmixing after adding flour
  • Fold in flour gently and stop mixing once combined
  • Filling tastes dry
  • Too much flour or overbaked
  • Weigh flour accurately and remove tart as soon as filling is set
  • Filling separates
  • Butter and sugar not creamed properly
  • Cream butter and sugar until smooth and fully combined before adding egg
  • Filling leaks into crust
  • Crust not pre baked enough
  • Pre bake tart shell until lightly set before adding filling
  • Filling browns unevenly
  • Oven heat uneven or tart too close to top element
  • Bake on middle rack and rotate tart halfway through baking

Mousse & Cream

Issue Cause Fix
  • Cream is lumpy
  • Cornstarch not whisked smooth before heating or cream overheated
  • Whisk cornstarch completely smooth with milk and egg before heating and cook on medium heat while whisking constantly
  • Cream is too thin
  • Not cooked long enough or cornstarch under activated
  • Cook the cream until very thick and bubbling while whisking continuously
  • Cream tastes starchy
  • Cream not cooked long enough after thickening
  • Let the cream cook for at least 30 to 60 seconds after it thickens to fully cook out the starch
  • Cream forms skin in fridge
  • Not covered directly with cling film
  • Press cling film directly onto the surface while chilling
  • Cream separates when folding whipped cream
  • Custard base still warm
  • Make sure the vanilla custard is fully cold before folding in whipped cream
  • Cream is grainy
  • Overcooked custard or eggs curdled
  • Heat gently and never let the custard boil hard whisk constantly
  • Cream is too loose to pipe
  • Whipped cream underwhipped
  • Whip cream to stiff peaks and fold in gently in two-three additions
  • Cream weeps on tart
  • Tart base or chocolate layer still warm
  • Fully cool tart and chocolate layer before piping cream
  • Cream tastes weak
  • Vanilla not infused long enough
  • Let vanilla pods steep in hot milk before tempering for stronger flavor

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