Chocolate Sheet Cake with Brown Butter Frosting
Desserts
Chocolate Sheet Cake with Brown Butter Frosting
- Serves
- 12 servings
Bring it to the table
About this recipe.
A rich cocoa-buttermilk sheet cake topped with brown butter and toasted-milk frosting.
Before you start
Gather your ingredients.
Check your pantry before you begin. Full quantities and serving adjustments are in the recipe card below.
See the ingredient checklist
Cake
- nonstick vegetable oil spray (for the pan)
- 2 cups granulated sugar (400 g)
- 1 3/4 cups all-purpose flour (219 g)
- 1 teaspoon baking soda
- 3/4 cup Dutch-process cocoa powder (64 g)
- 3/4 cup vegetable oil
- 1 cup hot water
- 2 large eggs
- 3/4 cup well-shaken buttermilk
- 2 teaspoons Diamond Crystal kosher salt (or 1 1/4 teaspoons Morton for the base recipe)
- 2 teaspoons vanilla extract
Frosting
- 1/4 cup unsalted butter (for browning)
- 1/3 cup nonfat dry milk powder (32 g)
- 2/3 cup heavy cream
- 1 cup unsalted butter (at room temperature)
- 2 1/2 teaspoons Diamond Crystal kosher salt (or 1 1/2 teaspoons Morton for the base recipe)
- 1 teaspoon vanilla extract
- 1 lb powdered sugar (453 g, sifted)
To finish
- flaky sea salt (optional)
- sprinkles (optional)
Cool both components before frosting
The cake needs to be completely cool, and the browned mixture should no longer be hot before it is beaten into the buttercream.
At the table
Cut into twelve squares, wiping the knife between cuts for neat frosting edges.
The cooking plan
How to make Chocolate Sheet Cake with Brown Butter Frosting.
Heat the oven to 375°F with a middle rack. Line the bottom of a 13-by-9-inch metal pan with parchment and lightly coat the parchment and pan sides with spray. Whisk the granulated sugar, flour and baking soda in a bowl.
In a larger bowl, whisk the cocoa, oil and hot water for about 30 seconds, until the cocoa is dispersed. Whisk in the eggs, buttermilk, cake salt and vanilla. Add the dry mixture and whisk just until smooth. Scrape into the pan.
Bake for 25–30 minutes, until springy and a tester comes out with a few moist crumbs but no wet batter. Cool completely, about 1 hour, before frosting. The cake can stay in its pan.
For the frosting, warm the separate 1/4 cup butter in a skillet over medium-low heat until foamy. Add the milk powder and stir continuously for about 5 minutes, until a dark nut-brown color. Remove from the heat and immediately stir in the cream to stop the browning. Stir vigorously until mostly smooth; small flecks are fine. Cool for about 30 minutes.
Beat the room-temperature cup of butter with the frosting salt and vanilla on medium-high speed for about 1 minute, until creamy. Beat in half the powdered sugar, beginning on low speed. Add the cooled brown butter mixture and remaining sugar, then beat for about 2 minutes, until fluffy.
Spread over the completely cool cake. Finish with optional flaky salt and sprinkles.
Let’s cook
The full recipe.
Check off ingredients as you get them ready.
Changing servings? The ingredient list scales automatically. Adjust quantities named in the steps to match, and choose pans and cooking times for your batch.
Chocolate Sheet Cake with Brown Butter Frosting
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Ingredients
Equipment
Equipment images are illustrative. Exact products may vary.
Instructions
- Heat the oven to 375°F with a middle rack. Line the bottom of a 13-by-9-inch metal pan with parchment and lightly coat the parchment and pan sides with spray. Whisk the granulated sugar, flour and baking soda in a bowl.
- In a larger bowl, whisk the cocoa, oil and hot water for about 30 seconds, until the cocoa is dispersed. Whisk in the eggs, buttermilk, cake salt and vanilla. Add the dry mixture and whisk just until smooth. Scrape into the pan.
- Bake for 25–30 minutes, until springy and a tester comes out with a few moist crumbs but no wet batter. Cool completely, about 1 hour, before frosting. The cake can stay in its pan.
- For the frosting, warm the separate 1/4 cup butter in a skillet over medium-low heat until foamy. Add the milk powder and stir continuously for about 5 minutes, until a dark nut-brown color. Remove from the heat and immediately stir in the cream to stop the browning. Stir vigorously until mostly smooth; small flecks are fine. Cool for about 30 minutes.
- Beat the room-temperature cup of butter with the frosting salt and vanilla on medium-high speed for about 1 minute, until creamy. Beat in half the powdered sugar, beginning on low speed. Add the cooled brown butter mixture and remaining sugar, then beat for about 2 minutes, until fluffy.
- Spread over the completely cool cake. Finish with optional flaky salt and sprinkles.
Notes
Tried this recipe?
Let us know how it was!A couple of useful answers.
How do I change the number of servings?
Use the serving controls in the recipe card. Ingredient quantities change automatically; quantities written in the instructions, pan sizes and cooking times still need your attention.
Can I print or check off the ingredients?
Choose Print recipe near the title for a printable version. On this page, check ingredients off as you prepare them, then use Reset ingredient checks to start again.
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