Recipe

Blank Book Cake

An open “blank book” cake with soft vanilla crumb, fluffy buttercream, and fondant pages you can decorate any way you want.

By Matt Campbell

•

4.8

An open blank book cake on a wooden kitchen table, with white fondant pages, subtle page texture, and clean buttercream edges under soft natural light

Jump to Recipe

A blank book cake is my favorite kind of kitchen magic trick. It looks like you spent all day doing edible architecture, but the secret is: it is mostly just a well-frosted sheet cake with a few smart cuts and some fondant that acts like paper.

This version is an open book, because that gives you the most visual payoff with the least drama. You get two “pages” to decorate later (birthday message, baby shower, graduation, whatever), or you can keep it truly blank and let the cake be the moment.

A baking counter with flour, sugar, eggs, butter, milk, vanilla, and baking powder measured in bowls, ready to make vanilla sheet cake

Why It Works

Clean open-book shape without fancy tools: a shallow center fold plus a smooth buttercream slope creates the open pages illusion.
Pages that look like paper: white fondant with light texture and a tiny bit of shading, not heavy coloring.
Frosting that behaves: a slightly stiffer buttercream gives you crisp edges and keeps the fondant from sliding around.
Make-ahead friendly: bake the cake the day before, chill it, and decorate when you are not rushing.

Pairs Well With

Storage Tips

Short term (best texture): Store slices in an airtight container at cool room temperature for up to 2 days only if your room is cool (about 70°F or below) and the cake has no perishable fillings. If it is warm, or if you are unsure, refrigerate.

Refrigerator: 4 to 5 days, tightly covered. Fondant will firm up and may “sweat” a bit when it comes back to room temp. That is normal. Let slices sit 30 to 60 minutes, then blot very gently with a paper towel if needed.

Freezer: Freeze individual slices, wrapped tightly in plastic wrap plus a freezer bag, up to 2 months. Thaw overnight in the fridge, then let sit 30 to 60 minutes at room temperature before eating.

Common Questions

Do I have to use fondant for the pages?

No, but fondant makes the cleanest “paper” look. If you do not want fondant, you can pipe the pages with stiff buttercream and drag a toothpick through it to mimic page lines. It tastes great, just looks a little more like frosting (because it is).

How do I keep fondant from sweating?

Sweating usually happens when a cold cake hits warm, humid air. Chill the cake to set it, then bring it to room temp still in the box or loosely covered so it warms gradually. If it sweats, do not touch it until the moisture evaporates, or blot very lightly.

Can I make this with a boxed cake mix?

Absolutely. Use a 9 x 13-inch vanilla mix. The decorating method is the same.

What is the easiest way to make page lines?

Score the fondant gently with a toothpick or a butter knife. Keep the lines imperfect on purpose. Real pages are not laser straight.

Can I write on it?

Yep. Use edible marker, gel food color mixed with a drop of vodka, or softened chocolate. If you want that “ink on paper” look, go light and a little uneven.

How do I cut it so it still looks like a book?

Slice straight down across the width, like you are cutting “rows” of pages. Avoid cutting right on the center crease for the first few slices if you want the illusion to stay crisp on the serving table.

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

9 x 13-inch baking pan
Mixing bowls and whisk (or stand mixer)
Offset spatula
Bench scraper (for clean sides)
Long serrated knife (for trimming and leveling)
Rolling pin (for fondant)
Toothpick or small paring knife (for page lines)
Parchment paper
Cake board or sturdy platter (for moving and serving)

I love cakes that feel like a little inside joke. The first time I made a book cake, I was convinced it would be a disaster, like one wrong move and I would end up with “abstract rectangle.” But once you chill the cake and treat frosting like spackle, it is shockingly forgiving. Now it is my go-to when I want something that looks impressive but still lets me cook like myself: relaxed, curious, and willing to smooth the buttercream three extra times because I know it will be worth it.

Blank Book Cake

(4.8 Reviews)

Prep Time 45 minutes (active)

Cook Time 35 minutes

Total Time 1 hour 20 minutes (active, not including cooling and chilling)

Servings 12 to 15

Ingredients

Vanilla sheet cake

2 1/2 cups all-purpose flour
2 1/2 tsp baking powder
1/2 tsp fine salt
3/4 cup unsalted butter, softened
1 3/4 cups granulated sugar
4 large eggs, room temperature
1 tbsp vanilla extract
1 cup whole milk, room temperature

Buttercream (sturdy, not overly sweet)

1 1/2 cups unsalted butter, softened
5 cups powdered sugar
2 tsp vanilla extract
1/2 tsp fine salt
3 to 6 tbsp heavy cream or milk (as needed)

Book decorating

1 to 1 1/2 lb white fondant (for pages and cover details)
Cornstarch or powdered sugar (for rolling)
Gel food coloring: tiny bit of ivory or tan (optional, for page warmth)
Gel food coloring: brown or gray (optional, for very light page shading)

A mixing bowl of fluffy vanilla buttercream with an offset spatula resting on the rim on a bright kitchen counter

Instructions

Bake the cake

Prep. Heat oven to 350°F. Grease a 9 x 13-inch pan and line with parchment (leave a little overhang so you can lift it out).
Mix dry. Whisk flour, baking powder, and salt in a bowl.
Cream. Beat butter and sugar until light and fluffy, about 2 to 3 minutes.
Add eggs and vanilla. Beat in eggs one at a time, then vanilla.
Finish batter. Add dry ingredients in 2 additions, alternating with milk. Mix just until smooth.
Bake. Bake 30 to 38 minutes, until a toothpick comes out clean and the top springs back lightly.
Cool completely. Cool 20 minutes in pan, then lift out and cool fully on a rack. For easiest decorating, wrap and chill the cake at least 2 hours or overnight.

A golden vanilla sheet cake cooling on a wire rack with parchment underneath on a kitchen counter

Shape the book

Level and square. If the cake is domed, level it with a serrated knife. Trim any rough edges so you have a neat rectangle.
Move to a board. Slide the cake onto a cake board or serving platter now, so you are not trying to lift a finished “book” later.
Mark the center. Lightly score a line down the middle of the cake lengthwise. This is your “book fold.”
Create the fold. Use a small spoon or paring knife to remove a very shallow channel along that center line (think: a soft groove, not a canyon), about 1/4 inch deep at most.
Soften the V. Spread buttercream into the channel and feather it outward on both sides to create two gentle “page slopes.” Visual cue: lowest at the center groove, highest at the outer edges.
Chill. Chill 10 to 15 minutes so the fold shape firms up before you crumb coat.

A rectangular sheet cake with a shallow groove carved down the center to create the open book fold

Frost it

Make buttercream. Beat butter until smooth. Add powdered sugar, vanilla, and salt. Stream in cream a tablespoon at a time until it is spreadable but holds peaks. You want it slightly stiff for sharp edges.
Crumb coat. Apply a thin layer of buttercream over the whole cake to trap crumbs. Keep the center fold visible, but do not stress about perfection here. Chill 20 minutes.
Final coat. Add a thicker, smooth layer. Use an offset spatula and bench scraper for clean sides and crisp corners. Re-define the center fold with a light pass of your spatula if it got filled in.
Chill again. Chill 20 to 30 minutes so the frosting firms up before fondant.

A rectangular cake being smoothed with a bench scraper, creating sharp buttercream sides on a parchment-lined counter

Add the pages

Roll fondant. Dust the counter lightly with cornstarch or powdered sugar. Roll white fondant to about 1/8 to 3/16 inch thick. Keep any fondant you are not using covered so it does not dry out.
Measure, then cut. Measure the top of your cake. Cut two equal rectangles sized to fit each “page,” trimming as needed for clean edges. You can either leave a 1/4 to 1/2 inch gap down the center or place the panels flush and score a crease. Both work. The gap is a little more graphic, the flush method is more seamless.
Help them stick. Brush a very thin layer of water onto the buttercream where the fondant will sit, or spread a whisper-thin layer of fresh buttercream. Add the fondant panels and gently smooth from the center outward so they do not trap air or slide.
Make the center crease. Gently press a clean ruler edge, butter knife, or fondant tool down the center to suggest the fold. Let it follow the dip you built into the cake.
Score page lines. Use a toothpick to lightly score horizontal lines on the fondant pages. Keep them faint and a little imperfect.
Optional shading. For realism, tint a tiny bit of buttercream with a speck of tan or gray. Wipe most of it off your brush or paper towel, then softly brush near the page edges. You want “soft shadow,” not “dirty pages.”

A frosted rectangular cake topped with white fondant cut into two page panels with a center crease and subtle scored page lines

Finish

Edge trim (optional). Roll thin fondant ropes or cut thin strips to outline the book cover edge and the outer perimeter of the pages. Attach with a tiny brush of water.
Optional cover details. Want it to read more “book” than “paper”? Add a thin colored border around the outer edge like a cover, or a skinny fondant ribbon “bookmark” tucked into the center crease.
Clean up. If powdered sugar is showing, gently buff with a dry, clean paper towel.
Chill to set, then move. Chill 15 to 20 minutes before transporting so the fondant and frosting firm up. Carry the cake on its board with two hands and keep it level.
Keep it blank or decorate. Leave the pages blank for that minimalist look, or add writing with an edible marker or a fine brush dipped in gel color mixed with a drop of vodka.

Nutrition information is estimated.

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Blank Book Cake

Why It Works

Pairs Well With

Recommended

Vanilla Buttercream Frosting

American Buttercream Icing

Classic Vanilla Cupcake Icing

Whipped Frosting

Storage Tips

Common Questions

Do I have to use fondant for the pages?

How do I keep fondant from sweating?

Can I make this with a boxed cake mix?

What is the easiest way to make page lines?

Can I write on it?

How do I cut it so it still looks like a book?

Blank Book Cake

Ingredients

Vanilla sheet cake

Buttercream (sturdy, not overly sweet)

Book decorating

Instructions

Bake the cake

Shape the book

Frost it

Add the pages

Finish