Chocolate Pistachio Ganache Tart

Featured in Sweet Moments of Joy.

This decadent tart features a crisp cocoa pastry base, layered with smooth dark chocolate ganache and a creamy pistachio center. Each slice offers a balance of flavors and textures: the chocolate shell gives way to a velvety ganache, topped by luscious pistachio cream and finished with a glossy chocolate glaze. Roasted pistachios provide both crunch and a vibrant flourish. Enjoy this elegant dessert chilled, allowing the flavors to meld together for a truly memorable treat, ideal for gatherings or an impressive finish to any meal.

Barbara Chef
Updated on Mon, 30 Jun 2025 09:38:18 GMT
A slice of chocolate cake with almonds on top. Pin it
A slice of chocolate cake with almonds on top. | gracefulflavors.com

This chocolate pistachio ganache tart is my go-to showstopper for special dinners or celebrations. Each bite offers the richness of a deep chocolate shell, the silkiness of ganache, and a sweet nutty pistachio filling. The contrast between the creamy layers and the crunch of roasted pistachios makes it unforgettable every time.

Ingredients

  • All purpose flour: provides structure for a crisp tart base Choose a fresh bag for best results
  • Unsweetened cocoa powder: gives the shell its deep chocolate flavor Dutch process yields a richer color
  • Unsalted cold butter: ensures flakiness in the pastry Work quickly to keep it chilled
  • Powdered sugar: sweetens the pastry and keeps the crust tender Sift before using to prevent lumps
  • Large egg yolk: adds richness and binds the dough Look for eggs with bright orange yolks
  • Cold milk: helps bring dough together Use just enough for a smooth pliable mix
  • Pinch of salt: sharpens flavors in every tart layer Sea salt enhances taste
  • Heavy cream: forms the luscious ganache Choose high fat content for smooth texture
  • Dark chocolate: at least 60 percent is needed for glossy firm ganache Use a good eating chocolate you enjoy
  • Vanilla extract: warms and rounds out the chocolate
  • Shelled unsalted pistachios: provide sweetness and crunch Buy fresh green pistachios for vibrant color
  • Whole milk: adds increased creaminess to the pistachio layer
  • Granulated sugar: sweetens each filling layer
  • Cornstarch: thickens the pistachio layer to custard consistency Make sure it is fresh and not clumpy
  • Almond extract: optional but amplifies the pistachio aroma
  • Butter: in the top ganache layer makes the finish extra glossy Use real butter for best result
  • Roasted pistachios for garnish: choose between whole for elegance or chopped for texture

Step-by-Step Instructions

Prepare the Dough:
Whisk the flour cocoa powder powdered sugar and salt together in a mixing bowl thoroughly to ensure even distribution Then add the cold cubed butter Using your fingertips quickly work the butter into the dry ingredients until the mix resembles coarse sand Add the egg yolk mixing gently before drizzling in cold milk as needed until a soft but not sticky dough forms Shape into a thick disc wrap and refrigerate for a minimum of thirty minutes This chilling is crucial for easy handling and flaky results
Blind Bake the Tart Shell:
Set your oven to three hundred fifty degrees Fahrenheit Roll out the chilled dough between two pieces of parchment to just under a quarter inch thickness Fit it into a nine inch tart pan trimming any excess Press into the corners and prick the base with a fork Line with parchment and pour in pie weights or dried beans Bake for fifteen minutes then remove the weights and parchment continuing to bake for another ten minutes until dry and just set Allow to cool fully before continuing
Make the Bottom Ganache Layer:
Warm the heavy cream on medium heat stopping as soon as it begins to simmer Pour hot cream over the chopped dark chocolate and let it rest undisturbed for two minutes Stir gently with a spatula making small circles from the center out until fully melted and smooth Add the vanilla and pinch of salt blending once more Spread this ganache evenly into the cooled tart shell then chill this layer for at least thirty minutes until firm
Blend and Cook the Pistachio Cream Layer:
In a strong blender combine shelled pistachios and whole milk Mix on high until thick and nearly smooth Push through a mesh strainer if needed to remove any gritty bits Pour this paste into a small saucepan adding heavy cream sugar and cornstarch Stir continuously on medium heat scraping the bottom and sides to prevent sticking Cook until the mixture thickens and bubbles like pudding about five to six minutes Remove from heat Fold in almond extract if using and let cool until just warm Add a handful of whole roasted pistachios for textural contrast Spread this mixture gently over the chilled ganache
Finish with Top Ganache:
Measure heavy cream into a saucepan and heat until just simmering Pour directly over chopped chocolate and butter in a clean bowl Stir until fully melted and glassy Pour this final ganache evenly over the pistachio layer using a spatula for a smooth glossy surface
Chill and Garnish:
Decorate the edge of the tart with extra roasted pistachios pressing them in lightly for a finished look Chill the whole tart for at least sixty minutes so the layers can set Slice carefully with a hot knife for best presentation
A slice of chocolate cake with almonds on top. Pin it
A slice of chocolate cake with almonds on top. | gracefulflavors.com

Pistachios are hands down my favorite nut Their bright color and buttery sweetness always remind me of baking with my grandmother She would sprinkle them on everything from cookies to ice cream and now they are the signature of this tart

Storage Tips

Store the completed tart in the refrigerator lightly covered with plastic wrap It keeps beautifully for up to three days Do not freeze after assembly or the cream layers may lose their smooth texture If you want to make the shell ahead of time simply wrap and freeze the baked unfilled crust

Ingredient Substitutions

If you cannot find good shelled pistachios you can swap in lightly toasted almonds or hazelnuts for a different flavor Almond extract can be left out for a more subtle taste For a gluten free crust use a blend of almond and oat flours but add a touch more butter to prevent crumbling

A slice of chocolate cake with a green topping. Pin it
A slice of chocolate cake with a green topping. | gracefulflavors.com

Serving Suggestions

This tart is stately enough to anchor a holiday table or finish a romantic dinner Try topping with a dollop of whipped cream or a drizzle of raspberry sauce Serve chilled and slice with a knife run under hot water for clean beautiful pieces

Cultural Reflections

Chocolate and pistachio is a classic Italian flavor pairing found in both pastries and gelato The luxurious use of nuts in desserts dates back centuries while the artful layering in this tart recalls old world patisserie style I always imagine serving this in a sunlit courtyard at dusk

Frequently Asked Questions

→ How do I get a smooth pistachio layer?

Use a high-powered blender to puree pistachios, and strain the mixture for an ultra-smooth texture. This helps create a creamy, custard-like consistency in the center layer.

→ What type of chocolate is best for the ganache?

Choose dark chocolate with at least 60% cocoa content for rich flavor and silky texture. Quality chocolate yields the most decadent ganache layers.

→ Can this tart be made ahead?

Yes, the tart can be prepared a day in advance. Store it covered in the refrigerator to maintain freshness and allow the layers to set perfectly.

→ How do I prevent the tart shell from becoming soggy?

Blind bake the tart shell fully and let it cool completely before adding any fillings. This keeps the base crisp once ganache and cream are layered on top.

→ How should I garnish for best presentation?

Sprinkle chopped or whole roasted pistachios around the edge just before serving. This adds visual appeal and a satisfying crunch.

Chocolate Pistachio Ganache Tart

Tart with cocoa pastry, silky ganache, pistachio cream, and a glossy chocolate finish garnished with roasted pistachios.

Prep Time
40 Minutes
Cook Time
25 Minutes
Total Time
65 Minutes
By: Barbara


Difficulty: Difficult

Cuisine: French

Yield: 8 Servings (1 x 9-inch tart)

Dietary: Vegetarian

Ingredients

→ Chocolate Tart Shell

01 1 1/4 cups all-purpose flour
02 1/4 cup unsweetened cocoa powder
03 1/2 cup unsalted butter, cold and cubed
04 1/3 cup powdered sugar
05 1 large egg yolk
06 1–2 tablespoons cold milk
07 Pinch of salt

→ Bottom Ganache Layer

08 1/2 cup heavy cream
09 100g dark chocolate (at least 60%), chopped
10 1 teaspoon vanilla extract
11 Pinch of salt

→ Pistachio Layer

12 1 cup unsalted shelled pistachios, plus extra for garnish
13 1/4 cup whole milk
14 1/2 cup heavy cream
15 3 tablespoons granulated sugar
16 1 tablespoon cornstarch
17 1/2 teaspoon almond extract (optional)

→ Top Ganache Layer

18 1/2 cup heavy cream
19 100g dark chocolate, chopped
20 1 tablespoon butter

→ Garnish

21 Chopped or whole roasted pistachios

Instructions

Step 01

In a mixing bowl, whisk together all-purpose flour, cocoa powder, powdered sugar, and a pinch of salt. Add the cold, cubed butter and blend with fingertips or a pastry cutter until the mixture resembles coarse crumbs. Incorporate the egg yolk, then add cold milk one tablespoon at a time until a dough forms. Shape into a disc, wrap, and chill for at least 30 minutes.

Step 02

Preheat oven to 350°F (175°C). Roll out the chilled dough and fit into a 9-inch tart pan. Trim excess dough and prick the base with a fork. Line with parchment and fill with pie weights or dried beans. Bake for 15 minutes, remove the weights and parchment, then bake an additional 10 minutes. Allow the tart shell to cool fully before filling.

Step 03

Heat heavy cream in a small saucepan until it just begins to simmer. Pour over chopped dark chocolate in a separate bowl and let stand for 2 minutes. Stir until smooth, then add vanilla extract and a pinch of salt. Pour the ganache into the cooled tart shell and chill for 30 minutes or until set.

Step 04

In a blender or food processor, blend shelled pistachios with whole milk until creamy. Transfer to a saucepan, add heavy cream, granulated sugar, and cornstarch. Cook over medium heat, stirring continuously, until mixture thickens to a custard-like texture. Remove from heat, stir in almond extract if desired, and cool for 5–10 minutes. Fold in about 1/3 cup whole roasted pistachios. Evenly spread over ganache layer. Refrigerate for 30 to 45 minutes.

Step 05

Heat heavy cream until simmering. Pour over chopped dark chocolate and butter in a bowl. Stir until ganache is glossy and smooth. Gently pour over pistachio layer and smooth the surface with a spatula.

Step 06

Sprinkle chopped or whole roasted pistachios around the tart's edge for visual appeal. Refrigerate for at least 1 hour before slicing to ensure distinct layers.

Notes

  1. For an ultra-smooth pistachio filling, use a high-powered blender and strain the mixture if needed. Preparing the tart a day ahead is recommended for optimal flavor and slicing.

Tools You'll Need

  • 9-inch tart pan
  • Mixing bowls
  • Blender or food processor
  • Saucepan
  • Fine mesh strainer (optional)
  • Rolling pin
  • Whisk
  • Rubber spatula
  • Parchment paper
  • Pie weights or dried beans

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy, eggs, nuts, and gluten.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 430
  • Total Fat: 30 g
  • Total Carbohydrate: 32 g
  • Protein: 7 g