Espresso Tiramisu Tart
A stunning Italian-inspired dessert that layers a crisp buttery pie crust with a silky espresso-mascarpone filling infused with coffee liqueur and vanilla. The filling echoes tiramisu's classic flavors—coffee, cocoa, and creamy mascarpone—in elegant tart form. A final dusting of cocoa powder and shaved dark chocolate finishes this chilled showstopper.
- Prep
- 35 min
- Cook
- 25 min
- Wait
- 2 hr
- Total
- 3 hr
- Makes
- One 9-inch (23 cm) tart (10 slices)
Steps
Before you start
- Bring mascarpone and eggs to room temperature (1–2 hours)
- Preheat oven to 375°F (190°C) 15 minutes before baking
- Brew fresh espresso or strong instant coffee and let cool completely
- Have a 9-inch (23 cm) tart pan with removable bottom ready
Prepare the tart crustOven 375°F / 190°C
- If using a raw pie crust, fit it gently into your 9-inch (23 cm) tart pan with removable bottom, letting the crust overhang slightly.
- Prick the bottom and sides all over with a fork to prevent puffing.
- Line with parchment paper and fill with pie weights or dried beans.
- Bake at 375°F (190°C) for 12–15 minutes until the edges are pale golden but the bottom is still mostly pale.
- Remove the weights and parchment and set the crust aside to cool.
- If using a store-bought blind-baked crust, skip this step.
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Ready when: Edges are pale golden, bottom is light in color but not fully cooked
Tip: Don't fully bake the crust—it will finish cooking when filled and ensures the bottom doesn't burn.
Dissolve espresso and prepare the base
- In a small bowl, dissolve the 2 tablespoons (14 g) instant espresso powder in 3 tablespoons (45 ml) hot water and stir until smooth.
- Let cool completely to room temperature (about 10 minutes).
- This ensures the warm liquid won't crack your raw egg filling.
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Ready when: Espresso liquid is no longer steaming and is cool to the touch
Tip: Cool the espresso fully or it will scramble the eggs and curdle the mascarpone.
Whisk egg yolks with sugar
- In a large mixing bowl, whisk together the 6 egg yolks and 0.75 cup (150 g) granulated sugar.
- Whisk constantly for 2–3 minutes until the mixture is pale, thick, and falls from the whisk in ribbons.
- This step incorporates air and helps achieve a light texture.
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Ready when: Mixture is pale yellow, thick, and falls from the whisk in a ribbon that holds for a few seconds
Tip: Use an electric mixer for best results to ensure the mixture is fluffy and properly aerated.
Fold in mascarpone
- Gently fold the strained mascarpone into the egg yolk–sugar mixture in two additions, using a rubber spatula to cut down the center, sweep across the bottom, and fold up and over.
- Do this slowly and gently to avoid deflating the aeration—you should see no white streaks of mascarpone remaining.
- The mixture should be smooth and pale.
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Ready when: No visible white streaks of mascarpone; mixture is uniformly pale and creamy
Tip: Fold gently and avoid overmixing, which can deflate the texture and make the filling dense.
Add espresso, coffee liqueur, and vanilla
- Fold in the cooled espresso mixture (from step 2), then the 3 tablespoons (45 ml) coffee liqueur and 1 teaspoon (5 ml) vanilla extract.
- Fold gently until just combined and evenly colored.
- You should have a beautiful light-coffee-colored filling.
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Ready when: Filling is uniformly light coffee-colored with no visible streaks
Tip: The espresso has already been cooled, so the mixture should be safe at this point, but keep motions gentle.
Whip egg whites to stiff peaks
- In a separate very clean, grease-free bowl, whip the 3 egg whites on high speed until they form stiff, glossy peaks (about 3–4 minutes with an electric mixer).
- The whites should look like shaving cream and hold their shape when the beaters are lifted.
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Ready when: Egg whites form stiff, glossy peaks that don't collapse
Tip: Even a tiny drop of egg yolk or grease will prevent the whites from whipping properly—use a scrupulously clean bowl.
Fold in egg whites and salt
- Fold the whipped egg whites into the mascarpone–espresso mixture in two additions, using the same gentle folding technique.
- Add the 0.25 teaspoon (1 g) fine sea salt with the final fold.
- The filling should be light, airy, and mousse-like, with no visible white streaks.
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Ready when: Filling is uniformly light coffee-colored and mousse-like; no white streaks visible
Tip: This folding step is crucial—overworking deflates all your careful whipping of the egg whites.
Fill the tart crust
- Pour the mousse filling into the cooled, partially baked tart crust and smooth the top gently with an offset spatula or the back of a spoon.
- Spread evenly to the edges.
- The filling will come close to the rim.
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Ready when: Filling is level and evenly distributed
Tip: Work gently to avoid deflating the mousse you've just folded together.
Chill the tart
- Transfer the filled tart to the refrigerator and chill for at least 2 hours (or up to 8 hours).
- The filling will set and firm up as it cools.
- The mousse will be chilled and slightly set but still creamy.
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Ready when: Filling is firm to the touch but gives slightly when pressed; jiggle test shows minimal movement
Tip: If chilling overnight, cover the tart loosely with plastic wrap to prevent it from absorbing fridge odors.
Dust with cocoa and chocolate
- Just before serving, remove the tart from the refrigerator.
- Dust the top generously with unsweetened cocoa powder using a fine-mesh sieve—tap it gently over the tart, rotating as you go for even coverage.
- If using dark chocolate, use a microplane or box grater to shave thin curls of chocolate over the cocoa dust.
- This mimics the classic tiramisu finish.
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Ready when: Cocoa powder is evenly distributed; chocolate shavings are scattered over the top
Tip: Add the cocoa powder just before serving so it stays bright and doesn't absorb moisture from the filling.
Unmold and serve
- Run a thin, warm knife around the inside edge of the tart pan to loosen the crust from the sides.
- Push the removable bottom up from beneath, and the tart will slide off onto a serving plate.
- Alternatively, serve directly from the pan.
- Slice with a warm, wet knife, wiping it clean between cuts for neat slices.
- Serve chilled.
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Ready when: Tart unmolds cleanly and slices into neat portions
Tip: A warm knife prevents the crisp crust from cracking and keeps the mousse from sticking to the blade.
Good to know
Tips
- This recipe uses raw eggs in a mousse form. If you are uncomfortable with raw eggs, use pasteurized eggs (available at many grocery stores) or substitute an equivalent amount of Italian meringue (whipped egg whites cooked over a gentle heat to 160°F/71°C).
- Mascarpone must be at room temperature and strained to avoid lumps that will ruin the silky texture. If it sits out too long and separates, whisk it smooth before using.
- The espresso should be strong and fully cooled before folding into the eggs—any residual heat will scramble the yolks and split the mascarpone's fat. Plan ahead for cooling time.
- For a slightly less rich tart, reduce the mascarpone to 14 oz (400 g) and increase the whipped egg whites by one additional large white (4 total), whisked to soft peaks and folded in two additions.
Make ahead
The tart can be assembled and chilled for up to 8 hours before serving. Do not add the cocoa powder and chocolate shavings until just before serving so they remain bright and powdery.
Storage & reheating
Store covered in the refrigerator for up to 2 days. This tart does not freeze well because the mousse texture suffers upon thawing. Bring to the table directly from the fridge—the chilled, mousse-like filling is part of its appeal.
Substitutions
- Coffee liqueur (Kahlúa or similar) → Marsala wine, brandy, or 1 tablespoon additional cooled espresso plus 1 tablespoon sugar. Any coffee liqueur or mild alcohol will work; avoid overly sweet substitutes as the filling should taste sophisticated, not cloying.
- Blind-baked or store-bought pie crust (9-inch/23 cm) → Homemade tart dough (pâte brisée) or a graham cracker–butter crust. A butter crust echoes the classic tiramisu; graham cracker crust adds a slight sweetness and crunch.
- Mascarpone cheese → A blend of 12 oz (340 g) heavy cream whipped to stiff peaks plus 4 oz (115 g) cream cheese, blended smoothly. Mascarpone's richness is key, but this mixture mimics its texture and tang if unavailable.
- Dark chocolate (70% cacao) → Grated milk chocolate or white chocolate, or omit entirely. The cocoa powder is essential; the chocolate shaving is optional garnish for elegance.
