Brown Butter Layer Cake Recipe

<ul class="ingredients-main-list"><li class="ingredients-single-item">340g unsalted butter (for browning, divided)</li><li class="ingredients-single-item">300g granulated sugar</li><li class="ingredients-single-item">100g light brown sugar, packed</li><li class="ingredients-single-item">4 large eggs, room temperature</li><li class="ingredients-single-item">2 teaspoons vanilla extract</li><li class="ingredients-single-item">1 vanilla bean, seeds scraped (optional)</li><li class="ingredients-single-item">320g all-purpose flour</li><li class="ingredients-single-item">2 teaspoons baking powder</li><li class="ingredients-single-item">1 teaspoon baking soda</li><li class="ingredients-single-item">1/2 teaspoon salt</li><li class="ingredients-single-item">240ml buttermilk, room temperature</li><li class="ingredients-single-item">For the frosting:</li><li class="ingredients-single-item">225g unsalted butter (for browning)</li><li class="ingredients-single-item">450g powdered sugar, sifted</li><li class="ingredients-single-item">60ml heavy cream</li><li class="ingredients-single-item">1 teaspoon vanilla extract</li><li class="ingredients-single-item">1/4 teaspoon salt</li><li class="ingredients-single-item">100g toasted pecans or walnuts, chopped (for decoration, optional)</li></ul>

<ul class="equipment-main-list"><li class="equipment-single-item">Three 20cm (8-inch) round cake pans</li><li class="equipment-single-item">Stand mixer with paddle attachment</li><li class="equipment-single-item">Light-colored saucepan (to see butter browning)</li><li class="equipment-single-item">Offset spatula</li><li class="equipment-single-item">Wire cooling racks</li><li class="equipment-single-item">Cake turntable (optional)</li></ul>

<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Begin by browning the butter for both cake and frosting. In a light-colored saucepan, melt 450g of butter (340g for cake, 225g for frosting) over medium heat. Continue cooking, swirling occasionally (don't stir), until butter turns amber and smells nutty with brown bits forming at the bottom, about 8-10 minutes. Watch carefully as it can burn quickly! Pour into heat-proof containers, scraping all brown bits (they contain incredible flavor). Allow the brown butter for the cake to cool until solidified but still soft, about 1-2 hours at room temperature or 30-45 minutes in refrigerator.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>Preheat your oven to 175°C (350°F). Grease and line three 20cm (8-inch) round cake pans with parchment paper, then lightly grease the parchment.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>In a medium bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>In the bowl of a stand mixer fitted with the paddle attachment, beat the softened brown butter (reserved for cake) with granulated and brown sugars until light and fluffy, about 4-5 minutes. This extended beating creates air pockets essential for a tender crumb.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Add eggs one at a time, fully incorporating each before adding the next. Scrape down the sides of the bowl as needed. Beat in vanilla extract and vanilla bean seeds (if using).</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>With the mixer on low speed, add the flour mixture in three parts, alternating with the buttermilk, beginning and ending with flour (flour-buttermilk-flour-buttermilk-flour). Mix only until just combined after each addition—overmixing develops gluten, resulting in a tough cake.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>Divide the batter evenly among the prepared pans, using a kitchen scale if available for perfect layers. Smooth the tops with an offset spatula. Tap pans gently on counter to release air bubbles.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Bake for 25-30 minutes, until a toothpick inserted in center comes out clean or with a few moist crumbs. The cakes should spring back when lightly touched and begin pulling away from the sides of the pans.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>Let cakes cool in pans for 10 minutes before inverting onto wire racks to cool completely. The residual heat in the pans helps set the structure without overcooking.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>For the frosting, ensure your brown butter has cooled to room temperature but remains soft enough to beat. In a stand mixer with paddle attachment, beat the brown butter until creamy. Add sifted powdered sugar gradually, one cup at a time, mixing well after each addition.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>Add heavy cream, vanilla extract, and salt, beating until light and fluffy, about 5 minutes. If frosting seems too thick, add a tablespoon of cream; if too thin, add more powdered sugar.</li><li class="MethodStepper"><h4 class="step-title">Step 12</h4>To assemble, place one cake layer on a serving plate or cake turntable. Using an offset spatula, spread an even layer of frosting (about 1cm thick) over the top. Place second layer on top and repeat. Add final layer and apply a thin crumb coat of frosting over entire cake. Refrigerate for 15-20 minutes to set.</li><li class="MethodStepper"><h4 class="step-title">Step 13</h4>Apply remaining frosting generously over the entire cake with decorative swoops and swirls. For an elegant finish, press chopped toasted nuts around the base or sides of cake, if desired.</li><li class="MethodStepper"><h4 class="step-title">Step 14</h4>For best flavor, let cake sit at room temperature for 1-2 hours before serving, allowing the nutty brown butter flavors to fully develop. Store leftovers covered at room temperature for up to 3 days, or refrigerate for up to 5 days (bring to room temperature before serving).</li></ol>