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Tahini Sheet Cake with Chocolate Fudge Frosting

  • Author: Erin Clarkson
  • Prep Time: 45 minutes
  • Cook Time: 45 minutes
  • Total Time: 90 minutes
  • Yield: one 9" x 13" Sheet Cake 1x
  • Category: Cakes
  • Cuisine: American


Tahini Brown Sugar Sheet Cake with Chocolate Fudge Frosting. A perfectly moist stir together sheet cake, with brown sugar and tahini, is topped with a simple chocolate fudge frosting that comes together quickly in the food processor. This recipe is from Michelle Lopez's latest book, Weeknight baking.



Tahini Brown Sugar Sheet Cake

  • 225g cake flour
  • 425g dark brown sugar
  • 1 1/2 tsp baking powder
  • 1 1/2 tsp baking soda
  • 1 1/2 tsp kosher salt
  • 255g tahini, well stirred
  • 225g buttermilk, at room temperature
  • 170g water
  • 115g canola oil
  • 2 large eggs
  • 2 tsp vanilla extract

Chocolate Fudge Frosting

  • 170g unsweetened chocolate, from a high-quality chocolate bar, hand broken into pieces
  • 510g confectioner’s sugar, sifted
  • 340g unsalted butter, at room temperature
  • 85g whole milk
  • 1 Tbsp pure vanilla extract
  • 1/4 tsp kosher salt
  • Sprinkles for finishing, optional



Position a rack in the center of the oven and preheat the oven to 350°f / 180°c. Prepare your 9”x13” sheet pan by spraying with cooking spray and lining the pan with parchment, then lightly spraying the parchment.

In a medium bowl, whisk together the flour, brown sugar, baking powder, baking soda, and salt.

In the bowl of a stand mixer fitted with the whisk attachment, or in a large bowl, combine the tahini, buttermilk, water, oil, eggs, and vanilla. Whisk on low until the mixture is smooth and caramel in colour, about 1 minute. Gradually add the dry ingredients, using a rubber spatula to scrape down the bottom and sides of the bowl as necessary. Take extra care here - a small amount of tahini always sticks to the bottom. Whisk until just combined.

Pour the batter into the prepared pan. Bake for 40 to 45 minutes. When done, the op of the cake should bounce back when gently pressed and a skewer inserted into the center of the cake should come out with a few crumbs attached. Cool completely in the pan before adding the chocolate fudge frosting on top and smoothing with an offset spatula then decorating with sprinkles. Alternatively, remove the cake from the sheet pan using the parchment paper as handles, then frost with the chocolate fudge frosting.


In a food processor, pulse the chocolate for a few seconds at a time until chopped into 1 to 2 inch pieces. Transfer the chocolate to the top of a double boiler or a heatproof bowl set over a medium, heavy-bottomed saucepan filled with a few inches of simmering water (be sure the bottom of the bowl does not touch the water). Cook over medium heat, using a heatproof rubber spatula to stir the mixture and scrape the sides of the bowl occasionally, until the chocolate has melted, about 10 minutes. Set the top of the double boiler or the bowl on a wire rack and let the chocolate cool while you prep the other ingredients.

In the food processor, combine the confectioner’s sugar, butter, milk, vanilla, and salt. Pour in the melted chocolate and pulse briefly to combine, and then process until the frosting is creamy, smooth, a d light brown in color, about 5 minutes. Scrape down the bottom and sides of the bowl with a rubber spatula, then process for an additional 30 seconds. Use immediately.

Keywords: Tahini, Sheet Cake, Tahini Sheet Cake, Fudge Frosting, Weeknight Baking