Irresistible Biscoff Sheet Cake Recipe

Biscoff lovers, rejoice: this sheet cake celebrates that caramelized, spiced cookie flavor in every possible way. A crisp Biscoff cookie crust supports a tender Biscoff-flavored cake, topped with fluffy Biscoff buttercream, a warm Biscoff drizzle, and a scattering of cookie crumbs. It’s a great showstopper for gatherings, easy to adapt, and utterly satisfying for anyone who adores cookie butter.

Biscoff, five different ways

This cake uses Biscoff in five spots: the crust, the cake batter, the buttercream, the drizzle, and the cookie crumble topping. To build all these layers of flavor, plan to have multiple jars of cookie spread and several packs of Biscoff cookies on hand. If you’ve never tried them, these are the crunchy spiced cookies often served on flights and commonly sold in grocery cookie aisles. Store-brand cookie butter and cookies will work too if you prefer.

Below is an overview of how the cake comes together, followed by a complete ingredient list and detailed instructions so you can recreate it at home.

How to make a Biscoff sheet cake

This recipe starts with a doctored box cake mix to create a consistently moist, tender crumb. The Biscoff cookie powder becomes the crust, while Biscoff spread and cookie pieces fold into the batter and buttercream for pronounced flavor. You’ll press the crust into the pan without prebaking, pour the batter over it, bake, cool, and then finish with buttercream, drizzle, and crumbs.

Key components to prepare: pulse cookies to a fine powder for the crust and mix with melted butter. Press firmly into a 9×13 pan in an even layer. The cake batter and buttercream both use room-temperature dairy and eggs for best texture. The drizzle is simply melted Biscoff spread, thinned and applied warm for neat lines.

Can I make cupcakes or other cake shapes?

Absolutely. Divide the crust and batter among 24 cupcake liners and bake about 12–15 minutes. You can also omit the crust for a bundt cake, or split the batter between two 8″ pans or three 6″ pans—baking times will vary, so watch until a toothpick comes out clean.

The best Biscoff buttercream

This silky buttercream is made similarly to a peanut butter buttercream, substituting Biscoff spread for nut butter. Start by whipping softened butter until light, then add Biscoff spread, a bit of heavy cream, vanilla, and powdered sugar until you reach the desired consistency. Whipping the butter thoroughly before adding the remaining ingredients ensures a smooth, airy frosting.

Prepare a piping bag with a large French tip if you plan to pipe a braid or other decorative elements. Scrape down the bowl as needed and adjust cream or sugar to control firmness.

Equipment and simple tools

A food processor makes quick work of crushing cookies for both the crust and the cake batter. A large French piping tip creates the classic braid look; a squeeze bottle or small pouring vessel helps control the warm Biscoff drizzle. You’ll also want a cake scraper or angled spatula for smoothing the buttercream and a 9×13 sheet pan for baking.

Biscoff drizzle

The drizzle is delightfully simple: microwave Biscoff spread for about 20–30 seconds and stir until pourable. Transfer to a squeeze bottle or spoon and drizzle between piped lines or over the entire cake. Warmth helps it flow smoothly, so reheat briefly if it firms up while decorating.

Buttercream braid technique

To pipe the braid, form a row of shell shapes, pulling the tip’s tail toward the center as you go to create an offset-heart effect. Repeat in straight lines across the cake. Using a scraper to mark straight guide lines before piping helps keep everything even. If piping feels intimidating, a smooth layer of buttercream with a drizzle and cookie crumbs is quick and beautiful.

Simple finishing options

If you prefer to keep things easy, spread the buttercream evenly, drizzle melted Biscoff over the top, and sprinkle cookie crumbs. The flavor is unmistakable and satisfying with minimal effort.

Recipe overview

This recipe yields about 20 servings from a 9×13 pan. The main elements are a Biscoff cookie crust, a doctored white cake batter enriched with Biscoff, a whipped Biscoff buttercream, melted Biscoff drizzle, and crumbled cookies for texture. Detailed ingredient amounts and step-by-step instructions are included below in the recipe block so you can follow along and recreate this cake at home.

If you try this recipe, tag @bakingwithblondie #bakingwithblondie so Mandy can see your creations. Happy baking!

xo, Mandy