Butterscotch Pecan Layer Cake with Brown Butter Sponge Tips, FAQ & printable recipe

Tips for success

For the best texture, use cake flour; it gives the sponge a finer crumb. If you do not have cake flour, you can make a substitute: measure 2 cups all-purpose flour, remove 2 tablespoons, and add 2 tablespoons cornstarch, then sift together.

Toasting the pecans before chopping intensifies their flavor; spread them on a baking sheet and toast at 350°F (175°C) for 8-10 minutes, until fragrant. Let them cool completely before folding into the batter.

When whipping the mascarpone and cream, start on low speed to combine, then increase to medium-high. Watch carefully; the mixture goes from soft peaks to stiff peaks quickly. If you accidentally overbeat and the mixture curdles, you can rescue it by gently folding in a few tablespoons of cold cream.

For a neater slice, use a serrated knife and saw gently; wipe the blade between cuts. Serve the cake at room temperature for the best flavor and texture, but keep it refrigerated when not serving.

Variations

• Chocolate Butterscotch: Fold 1/2 cup of mini chocolate chips into the batter along with the pecans, and drizzle melted dark chocolate over the top instead of extra butterscotch sauce.
• Maple Pecan: Replace the butterscotch sauce with maple syrup in the frosting and for the topping, and use maple-glazed pecans for the praline.
• Bourbon Butterscotch: Add 2 tablespoons of bourbon to the butterscotch sauce before using, and sprinkle a little extra bourbon over the cake layers before frosting.
• Salted Caramel: Use salted caramel sauce in place of butterscotch, and increase the flaky sea salt on top to 1 teaspoon for a more pronounced salty-sweet contrast.

Storage and make-ahead

Fridge

Store the cake in an airtight container in the refrigerator for up to 3 days.

Freezer

The unfrosted cake layers can be frozen for up to 2 months, wrapped tightly in plastic wrap and foil. Thaw overnight in the refrigerator before assembling.

Reheat

To refresh slices, microwave individually for 10-15 seconds to warm the sponge, but note that the frosting will soften. Or serve at room temperature.

Store leftover cake in an airtight container in the refrigerator for up to 3 days. Because the frosting contains mascarpone and cream, it must be kept cold. Let the cake stand at room temperature for 20-30 minutes before serving to soften the frosting and sponge. The candied pecan topping may soften slightly over time; for best texture, add it fresh if serving the next day.

The cake layers can be baked up to 2 days ahead, cooled completely, wrapped tightly in plastic wrap, and stored at room temperature. The frosting can be made 1 day ahead and refrigerated in an airtight container; re-whip briefly before using. The assembled cake (without the sauce and praline topping) can be refrigerated for up to 1 day; add the warm sauce and praline just before serving.

Serving ideas

Serve this cake as the centerpiece of a dessert table, cut into thick wedges. The warm butterscotch sauce can be passed separately for those who want extra.

A scoop of vanilla ice cream or a dollop of lightly sweetened whipped cream would complement the richness, though the cake is satisfying on its own. The contrast of textures—crunchy praline, creamy frosting, and tender sponge—makes each bite interesting.

Pair the cake with coffee or a dessert wine, such as a late-harvest Riesling or a bourbon-based cocktail. Because the cake is rich, small slices are appropriate; a 12-serving yield means generous but not oversized portions.

For a more elegant presentation, dust the plate with a little cocoa powder or drizzle a zigzag of butterscotch sauce before placing the slice. The flaky sea salt on top is not just decorative; it brightens the butterscotch flavor.

Frequently asked questions

Recipe card

Butterscotch Pecan Layer Cake with Brown Butter Sponge

Prep 45 minCook 35 minRest 30 minTotal 1 h 50 minServes 12

Ingredients

• 2 1/4 cups cake flour
• 1 tbsp baking powder
• 1/2 tsp kosher salt
• 1 cup brown butter, cooled
• 1 1/2 cups granulated sugar
• 4 large eggs, at room temperature
• 2 tsp vanilla extract
• 1 cup buttermilk, at room temperature
• 1 1/2 cups toasted pecan halves, chopped small
• 4 oz caramelized blonde coverture chocolate, grated
• 1 cup mascarpone cheese, cold
• 1 1/2 cups heavy cream, cold
• 1/2 cup warm butterscotch sauce, plus more for serving
• 1 cup candied pecan praline
• flaky sea salt, for sprinkling, to taste

Instructions

1. Heat the oven to 350°F (175°C). Grease and flour two 9-inch round cake pans. In a medium bowl, whisk together the cake flour, baking powder, and salt. In a large bowl, beat the brown butter and sugar until light and fluffy. Add the eggs one at a time, beating well after each addition, then beat in the vanilla. With the mixer on low, add the flour mixture in three additions, alternating with the buttermilk, beginning and ending with the flour.
2. Bake the cakes for 25 to 30 minutes, until a toothpick inserted into the center comes out clean and the top springs back when lightly pressed. The internal temperature of the cakes should reach 160°F (71°C). Cool the cakes in the pans for 10 minutes, then turn out onto a wire rack and cool completely.
3. In a chilled bowl, beat the mascarpone and heavy cream together with an electric mixer on medium speed until soft peaks form. Slowly drizzle in the warm butterscotch sauce while beating, then increase the speed to high and beat until stiff, spreadable peaks form. Do not overbeat, or the mixture may curdle.
4. Place one cooled cake layer on a serving plate or cake stand. Spread a generous layer of the mascarpone butterscotch frosting over the top, about 1/2 inch thick. Place the second cake layer on top, cut side down if domed. Spread a thin crumb coat of frosting over the entire cake and refrigerate for 15 minutes to set.
5. Spread the remaining frosting over the top and sides of the cake, creating swirls and peaks. Reserve a small amount for piping rosettes on top if desired. Chill the frosted cake for 20 minutes to firm up.
6. Warm the extra butterscotch sauce until it is pourable but not boiling. Slowly pour the warm sauce over the crown of the cake, letting it cascade down the sides in thick rivulets. Use an offset spatula to guide the sauce to the edges if needed.
7. Pile the candied pecan praline generously on top of the cake, creating a mound. Drizzle a little extra warm butterscotch sauce over the pecans, then sprinkle with flaky sea salt. Let the cake stand for 10 minutes so the sauce sets slightly.
8. Use a sharp, thin-bladed knife to cut a thick triangular wedge. Lift the slice with a metal cake server and place on a dessert plate. Serve immediately, with extra warm butterscotch sauce on the side if desired.

Contains: gluten, eggs, milk, tree nuts

Estimated nutrition per serving

Calories

620

Protein

7 g

Carbohydrates

55 g

Fat

42 g

Automatic estimate from the ingredient list, not laboratory-verified.