My chai sheet cake with espresso buttercream is everything I love about fall baking: warm, spiced cake paired with a creamy, coffee-kissed frosting. The cake is soft and tender thanks to sour cream and buttermilk, and each slice is perfectly spiced with cinnamon, cardamom, ginger, and a touch of black pepper.
The espresso buttercream is what makes it special — the coffee balances the sweetness for a flavor combo that's cozy, a little bold, and absolutely unforgettable. It's comforting and elegant at once, perfect for gatherings or an afternoon treat with coffee, like my sourdough carrot snack cake and my sourdough funfetti layer cake.
Quick Look: Chai Sheet Cake with Espresso Buttercream
⏱️ Ready In: About 2 hours 5 minutes, including cooling
🔥 Bake Time: 30–35 minutes at 350°F
🍽️ Makes: 15 servings (9x13 sheet cake)
✨ Calories: Approximately 436 per serving
🥄 Main Ingredients: Chai spices, sour cream, buttermilk, espresso buttercream
🌿 Dietary Info: Vegetarian (easily dairy-free)
💛 Why You'll Love It: A tender, warmly spiced chai cake topped with creamy espresso buttercream — cozy, a little bold, and easy to make in one pan.
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Why You'll Love This Recipe
- Cozy chai spice. Cinnamon, cardamom, ginger, allspice, nutmeg, cloves, and a touch of black pepper, like my spiced zucchini snack cake.
- That espresso buttercream. The coffee balances the sweetness for a bold, unforgettable finish — the same coffee-forward direction as my coffee and walnut loaf cake.
- Soft and tender. Sour cream and buttermilk keep the crumb moist for days.
- Easy sheet cake format. One 9x13 pan, no layering or stacking.
- Spice-and-coffee lovers' dream. If you love chai, you'll also love my sourdough malted chai chocolate chip cookies.
Jump to:
- Quick Look: Chai Sheet Cake with Espresso Buttercream
- Why You'll Love This Recipe
- Ingredients
- Easy Substitutions & Variations
- How to Make Chai Sheet Cake
- Expert Tips
- What Makes This Recipe Special?
- Chai Sheet Cake FAQs
- Chai Sheet Cake Troubleshooting Guide
- Storage
- Other Cake Recipes to Consider
- Chai Sheet Cake with Espresso Buttercream
Ingredients
For the cake
- All-purpose flour: The structure of the cake.
- Chai spice blend (cinnamon, ginger, cardamom, allspice, nutmeg, cloves, and optional black pepper): The warm, cozy flavor base.
- Baking powder + baking soda: Your lift.
- Kosher salt: Balances the sweetness.
- Unsalted butter: Softened, creamed for a light crumb.
- Granulated sugar + brown sugar: A mix for sweetness and moisture.
- Eggs + vanilla: Bind and enrich the batter.
- Whole milk or buttermilk + sour cream: Keep the cake soft and tender.
For the espresso buttercream
- Unsalted butter: Softened, whipped until creamy.
- Powdered sugar (sifted): Sweetens and thickens.
- Espresso powder + hot water or milk: Dissolved together for bold coffee flavor — the same trick behind my chocolate cinnamon rolls with espresso cream cheese icing.
- Vanilla + kosher salt: Round out the frosting.
See the recipe card for quantities.
Easy Substitutions & Variations
- Dairy-free: Use a non-dairy milk (oat milk pairs especially well) and plant-based butter for both cake and frosting.
- Sour cream: Swap with Greek yogurt for similar richness.
- Espresso powder: Use strong brewed coffee (reduce the other liquid slightly) if you don't have espresso powder.
- Layer cake: Bake in two 8-inch rounds and stack with buttercream between for a showstopper.
- Glaze topping: Skip the buttercream and drizzle with a simple espresso glaze for a lighter finish.
- Extra spice: Add more black pepper or cloves for a stronger chai flavor, like my chewy sourdough gingerbread cookies.
- Espresso blondies: Craving that coffee flavor in bar form? Try my white chocolate espresso blondies.
- Nut topping: Sprinkle chopped walnuts or pecans over the frosting for crunch, or pair with my pumpkin cheesecake cookies for a cozy dessert spread.
How to Make Chai Sheet Cake
Note: I bake by weight for accuracy. Cup measurements are approximate and may vary depending on how you scoop.
Step 1: Make the batter: Whisk dry ingredients. Cream butter, sugars, eggs, and vanilla. Alternate adding dry ingredients with milk and sour cream.
Step 2: Bake: Spread batter into a prepared 9×13 pan and bake until a toothpick comes out clean.
Step 3: Make frosting: Dissolve espresso powder in hot liquid. Beat butter, sugar, espresso, vanilla, and salt until fluffy.
Step 4: Frost & serve: Spread frosting over the cooled cake. Slice and enjoy.
Weigh your ingredients! Using a kitchen scale ensures your measurements are accurate, which is key for getting consistent results in baking. It takes the guesswork out of measuring and helps your recipes turn out exactly as intended every time.
Expert Tips
- Cool the cake completely before frosting. Warm cake will melt the buttercream right off.
- Dissolve the espresso powder first. Stirring it into hot water or milk prevents gritty specks in the frosting.
- Don't overmix the batter. Mix just until combined for a tender crumb.
- Alternate wet and dry. Adding the dry ingredients in additions with the milk and sour cream keeps the batter smooth.
- Want stronger coffee flavor? Dissolve up to 1 tablespoon of espresso powder in the hot liquid, and sprinkle a pinch of chai spice on top before serving.
What Makes This Recipe Special?
Chai and espresso are a match made in cozy heaven, and this cake puts them together perfectly: a tender, sour-cream-and-buttermilk crumb spiced with a full chai blend, topped with a creamy espresso buttercream that keeps the whole thing from tasting too sweet. The touch of black pepper in the spice blend gives it that authentic chai warmth. And because it's a sheet cake, it's elegant enough for a holiday table but easy enough for a Tuesday.
If you love warm, cozy bakes, you're in good company on the blog. My chewy sourdough gingerbread cookies bring the same spice-forward comfort, and my sourdough discard coffee cake is another cozy, coffee-friendly bake.
Chai Sheet Cake FAQs
Yes! This recipe uses a blend of cinnamon, ginger, cardamom, allspice, nutmeg, cloves, and a pinch of black pepper. You can mix it yourself or use the quantities in the recipe card.
Yes. Use strong brewed coffee in place of the espresso powder and dissolving liquid, reducing the other liquid slightly so the buttercream isn't too loose.
Absolutely; bake in two 8-inch round pans and stack with the buttercream between for a showstopper.
Yes. Use a non-dairy milk (oat milk is great), dairy-free sour cream or yogurt, and plant-based butter for both the cake and frosting.
Yes, the cake keeps well for several days and the flavor deepens. Frost the day you serve for the freshest buttercream.
Chai Sheet Cake Troubleshooting Guide
| Problem | Cause | Fix |
|---|---|---|
| Buttercream slid off | Cake frosted while warm. | Cool the cake completely before frosting. |
| Gritty buttercream | Espresso powder not dissolved. | Dissolve it in hot water or milk before adding. |
| Dense cake | Overmixed batter or cold ingredients. | Mix just until combined; use room-temperature ingredients. |
| Weak chai flavor | Spices old or under-measured. | Use fresh spices and don't skip the black pepper. |
| Dry cake | Over-baked. | Start checking at 30 minutes; pull when a toothpick comes out clean. |
Storage
- Store covered at room temperature for up to 2 days, or refrigerate for up to 5 days (bring to room temperature before serving).
- Freeze slices wrapped tightly for up to 2 months; thaw overnight in the fridge and bring to room temperature.
Other Cake Recipes to Consider
Did you make this recipe?
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Chai Sheet Cake with Espresso Buttercream
Equipment
- Mixing bowls
- Electric hand mixer or stand mixer
- Measuring cups and spoons
- Kitchen Scale
- 9×13-inch cake pan
- Parchment Paper
- Wire cooling rack
- Offset spatula
Ingredients
For the cake
- 240 g all-purpose flour 2 cups
- 1 teaspoon cinnamon
- ¾ teaspoon ground ginger
- ½ teaspoon ground cardamom
- ¼ teaspoon allspice
- ¼ teaspoon nutmeg
- ⅛ teaspoon cloves
- Pinch of black pepper optional, for a subtle bite
- 1 ½ teaspoon baking powder
- ½ teaspoon baking soda
- ½ teaspoon kosher salt
- 170 g unsalted butter softened (¾ cup)
- 200 g granulated sugar 1 cup
- 100 g brown sugar packed (½ cup)
- 3 large eggs room temperature
- 1 tablespoon vanilla extract
- 240 ml whole milk or buttermilk 1 cup
- 120 g sour cream ½ cup
For the espresso buttercream
- 170 g unsalted butter softened (¾ cup)
- 360 g powdered sugar sifted (3 cups)
- 2 teaspoon espresso powder
- 2–3 tablespoon warm water or milk for dissolving espresso powder
- 1 teaspoon vanilla extract
- Pinch of kosher salt
Instructions
- Prep the pan: Preheat oven to 350°F (175°C). Grease and line a 9×13-inch cake pan with parchment paper.
- Mix the dry ingredients: In a medium bowl, whisk together flour, chai spice blend, baking powder, baking soda, and salt. Set aside.
- Cream the butter and sugars: In a large mixing bowl, beat butter, granulated sugar, and brown sugar until light and fluffy (2–3 minutes). Add eggs one at a time, mixing well after each. Beat in vanilla.
- Finish the batter: Add dry ingredients in three additions, alternating with milk and sour cream, beginning and ending with the dry ingredients. Mix until just combined—do not overmix.
- Bake: Spread batter evenly in the prepared pan. Bake for 30–35 minutes, or until a toothpick inserted into the center comes out clean. Let the cake cool completely before frosting.
- Make the buttercream: Dissolve espresso powder in hot water or milk. In a large bowl, beat butter until creamy. Gradually add powdered sugar, mixing on low to combine. Add espresso mixture, vanilla, and salt, then beat on high for 2–3 minutes until fluffy.
- Frost: Spread buttercream evenly over the cooled cake. Slice and serve.
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