There is no reason to turn off the grill as soon as dinner is finished. The lingering heat is perfect for preparing dessert—especially when that dessert involves buttery grilled brioche, creamy mascarpone, and warm chocolate-hazelnut spread.

These grilled brioche sandwiches fall somewhere between a sophisticated grilled cheese and an especially decadent piece of toast. The bread becomes crisp and deeply golden on the outside while remaining soft beneath the surface. Inside, the mascarpone and chocolate-hazelnut spread soften into two distinct but complementary layers. A pinch of salt keeps the filling from tasting overly sweet, while an optional dusting of powdered sugar gives the finished sandwiches a simple, polished appearance.

Best of all, this dessert requires only a handful of ingredients and a few minutes on the grill. You can assemble the sandwiches before dinner, place them in the refrigerator, and cook them once everyone is ready for something sweet. Serve them as they are or add fresh berries, toasted hazelnuts, or a scoop of ice cream for an effortless summer dessert that feels far more elaborate than it is.

Why Brioche Is Perfect for Grilling

Brioche is made with generous amounts of butter and eggs, giving it a richer flavor and more tender texture than ordinary sandwich bread. When placed on the grill, its exterior caramelizes quickly and develops crisp, toasted edges. The center stays soft enough to contrast with the crust, but the bread is still substantial enough to contain the warm filling.

Look for a brioche loaf that can be cut into thick slices, ideally about ¾ inch thick. Very thin slices can become fragile once the mascarpone and chocolate-hazelnut spread begin to warm. Thick slices are easier to turn and give the filling enough time to soften before the bread becomes overly browned.

Slightly stale brioche works particularly well because it is a little firmer and less likely to compress or tear. If your brioche is exceptionally fresh and soft, slice it and leave it uncovered at room temperature for an hour or two before assembling the sandwiches. Challah, milk bread, or another enriched white bread can also be used, although brioche provides the richest flavor.

A Creamy Chocolate-Hazelnut and Mascarpone Filling

Chocolate-hazelnut spread is sweet, silky, and intense, so pairing it with mascarpone creates a more balanced filling. The mild Italian cheese adds a subtle tang and a rich, cheesecake-like texture without competing with the chocolate. As the sandwiches cook, the mascarpone softens and becomes luxuriously creamy while the chocolate-hazelnut spread turns warm and glossy.

Instead of mixing the two ingredients together, spread them on separate slices of bread. This creates distinct layers, allowing you to taste both the sweet chocolate-hazelnut spread and the milder mascarpone in every bite. A small pinch of salt sprinkled over the chocolate layer sharpens the flavors and prevents the finished dessert from feeling one-dimensionally sweet.

It may be tempting to add an extra-thick layer of filling, but restraint makes these sandwiches easier to grill. Leaving a ½-inch border around each slice gives the ingredients room to spread as they warm without immediately escaping onto the grill.

How to Keep the Filling Inside

The key to a neatly grilled sandwich is starting with a cool, relatively firm filling. Once the brioche is assembled, refrigerate the sandwiches for about 15 minutes. This short chilling time firms the mascarpone and helps the layers remain in place while the bread begins to toast.

Press the sandwiches together gently, but do not flatten them. Too much pressure can force the filling toward the edges before the bread even reaches the grill. Turn each sandwich with a wide spatula rather than squeezing it with tongs, which can compress the brioche and push out the softened center.

Medium-low heat is also important. Brioche contains butter, eggs, and sugar, so it browns faster than standard white bread. Cooking it over high heat may produce a dark exterior before the filling has had time to warm. Keep a cooler, indirect-heat area available so you can move the sandwiches away from the flames if they begin to brown too quickly.

Recipe: Grilled Brioche with Chocolate-Hazelnut and Mascarpone

This recipe makes four full sandwiches, which is enough for four generous servings. Because the dessert is rich, you can also cut each sandwich into two triangles and serve smaller portions to a larger group. The sandwiches are especially good with tart raspberries or strawberries, which provide a bright contrast to the creamy filling.

Makes 4 servings

Ingredients

• 8 thick slices brioche, approximately ¾ inch thick
• ½ cup mascarpone cheese, softened slightly
• ½ cup chocolate-hazelnut spread
• Pinch of kosher or flaky sea salt
• 3 tablespoons unsalted butter, softened
• 1 tablespoon granulated sugar
• ¼ teaspoon ground cinnamon, optional
• Powdered sugar, for serving
• Chopped toasted hazelnuts, for serving, optional
• Fresh raspberries or strawberries, for serving, optional

Instructions

1. Arrange the brioche slices on a clean work surface. Spread approximately 2 tablespoons of mascarpone over each of four slices, leaving a ½-inch border around the edges.
2. Spread approximately 2 tablespoons of chocolate-hazelnut spread over each of the remaining four slices, also leaving a ½-inch border. Sprinkle a small pinch of salt over each chocolate-hazelnut layer.
3. Place one chocolate-covered slice over each mascarpone-covered slice, positioning the fillings toward the center. Press each sandwich together gently without flattening the brioche or pushing the filling toward the edges.
4. Arrange the assembled sandwiches on a plate or small sheet pan. Refrigerate them for 15 minutes to allow the filling to firm slightly.
5. While the sandwiches chill, preheat the grill to medium-low heat, approximately 325–350°F. If possible, create both direct- and indirect-heat zones. Clean the grill grates thoroughly, especially if the grill was used to cook strongly flavored or heavily seasoned foods. Lightly oil the grates.
6. In a small bowl, stir together the granulated sugar and cinnamon, if using. Spread a thin layer of softened butter over both sides of each sandwich. Sprinkle the buttered surfaces lightly with the cinnamon-sugar mixture.
7. Place the sandwiches over direct heat. Grill for 3–4 minutes, until the undersides are crisp and golden with visible grill marks. Watch them closely because the butter and sugar can brown quickly.
8. Slide a wide spatula completely underneath each sandwich and turn it carefully. Grill the second side for another 3–4 minutes, until golden and crisp and the filling is warm and softened. If the bread is browning before the center is warm, move the sandwiches to indirect heat and close the grill for 1–2 minutes.
9. Transfer the grilled sandwiches to a cutting board and let them rest for 1–2 minutes. This allows the filling to settle slightly so it is less likely to run out when the sandwiches are sliced.
10. Cut each sandwich diagonally and dust it lightly with powdered sugar. Garnish with toasted hazelnuts, if desired, and serve warm with fresh raspberries or strawberries.

Tips for Grilling the Brioche

Begin with a clean grill. Brioche readily absorbs aromas, and traces of barbecue sauce, garlic, or grilled meat left on the grates can make their way into the dessert. Brush the grates well while they are warm, then wipe them with a lightly oiled paper towel held securely with long-handled tongs.

Once the sandwiches are on the grill, stay nearby. The bread should develop distinct grill marks and a uniformly golden surface, but it should not become blackened or charred. Check the underside after about two minutes, particularly if your grill runs hot or has uneven areas.

A wide metal spatula is the best tool for turning the sandwiches. Slide it underneath the entire piece of brioche and support the top lightly with a second spatula if needed. Once flipped, avoid repeatedly moving or pressing the sandwich. Let the heat toast the bread while the filling gradually softens.

If you are cooking over charcoal, wait until the flames have subsided and the coals are covered with a light layer of ash. Position most of the coals on one side of the grill so you have a cooler area available. On a gas grill, leave one burner low or off to create a similar indirect zone.

Ways to Serve Grilled Brioche

These sandwiches are rich enough to serve with nothing more than a light dusting of powdered sugar. The warm chocolate, cool mascarpone center, and crisp bread already provide plenty of flavor and textural contrast. A handful of fresh raspberries or sliced strawberries makes the plate feel summery while adding enough acidity to balance the filling.

For more crunch, scatter chopped toasted hazelnuts over the sandwiches immediately before serving. Toasting the nuts strengthens their flavor and echoes the hazelnuts in the chocolate spread. You can also add a few nuts inside each sandwich but chop them finely so the slices of bread still sit evenly against one another.

To turn the brioche into a full sundae, serve each half sandwich with a small scoop of vanilla, chocolate, or coffee ice cream. The ice cream will begin melting against the warm bread, creating a sauce on the plate. A spoonful of lightly sweetened whipped cream is a slightly less decadent alternative.

Variations to Try

Once you have mastered the basic sandwich, the filling is easy to adapt. For a brighter version, stir a little finely grated orange zest into the mascarpone. Chocolate, hazelnut, and orange are natural partners, and the citrus makes the rich filling taste lighter without adding additional sweetness.

Fresh berries can also be tucked inside the sandwiches. Arrange a thin layer of sliced strawberries or a few gently crushed raspberries over the mascarpone before adding the second piece of bread. Avoid using too much fruit, since excess juice can soften the brioche and make the filling more likely to leak.

For a mocha variation, stir a small pinch of instant espresso powder into the chocolate-hazelnut spread. If you prefer a less sweet dessert, increase the mascarpone slightly and reduce the chocolate-hazelnut spread. You can also omit the cinnamon sugar and brush the brioche with butter alone.

Making the Sandwiches Ahead

The sandwiches can be assembled up to four hours before grilling. Arrange them in a single layer, cover them tightly, and refrigerate until you are ready to cook. This makes the recipe particularly convenient for entertaining because all the measuring and assembly can be completed before guests arrive.

Wait to butter the outside of the brioche until shortly before grilling. If the butter sits on the bread for several hours, it can soak into the surface and make the sandwiches feel greasy rather than crisp. The cinnamon sugar should also be added at the last minute.

Grilled brioche tastes best immediately after cooking, when the exterior is crisp and the filling is warm. If you do have leftovers, refrigerate them in an airtight container. Reheat them gently in a skillet, toaster oven, or 325°F oven until the bread is crisp and the center is warm. A microwave will heat the filling, but it tends to make the bread soft.

Can You Make This Without an Outdoor Grill?

You can prepare these sandwiches indoors using a grill pan, cast-iron skillet, or other heavy-bottomed skillet. Preheat the pan over medium-low heat, then cook the buttered sandwiches for approximately 3–4 minutes per side. If the bread is browning too quickly, reduce the heat and cover the pan briefly to help warm the center.

A panini press will also work, although you should avoid pressing down firmly. The weight of the top plate is usually sufficient. Heavy pressure can flatten the tender brioche and force the filling out around the edges.

The indoor version will not have quite the same smoky flavor as brioche cooked outdoors, but it will still develop a crisp, caramelized surface and a soft, creamy center.

What Can You Substitute for Mascarpone?

If mascarpone is unavailable, softened full-fat cream cheese is the most practical substitute. Because cream cheese is firmer and tangier, mix ½ cup of it with 1–2 tablespoons of heavy cream until smooth and spreadable. This produces a milder texture that more closely resembles mascarpone.

Whole-milk ricotta can also work, but it should be drained well and whipped until smooth before being spread over the bread. Ricotta creates a slightly lighter, less silky filling with a more noticeable dairy flavor.

Avoid using thin yogurt or whipped cream as a direct substitute. Both contain too much moisture or lack enough structure to remain inside the sandwiches as they heat.

A Sweet Finish for a Summer Cookout

Grilled Chocolate-Hazelnut and Mascarpone Brioche proves that outdoor desserts do not have to begin and end with grilled fruit. With crisp, buttery bread surrounding a warm, creamy center, these sandwiches offer plenty of contrast and indulgence without requiring an oven or a long list of ingredients.

Assemble them before dinner, then place them on the grill once the main course is finished. In less than 10 minutes, you will have a warm dessert that can be served simply with powdered sugar or dressed up with berries, toasted hazelnuts, and ice cream. It is an easy, memorable way to make use of the grill’s final heat—and end a summer meal on an especially sweet note.