This German chocolate sheet cake is that reliable, go-to dessert everyone asks for. It’s rich, chocolatey, and topped with a luscious coconut-pecan frosting—no fancy layers or special tools required. If you’re feeding a crowd, this sheet cake delivers without any stress.
The batter comes together in one bowl, bakes evenly, and slices cleanly. Bring it to birthdays, potlucks, or just a weeknight treat, and expect empty plates.
Why This Recipe Works
This version keeps the classic flavor but trims the fuss. A simple cocoa-based batter gives you deep chocolate taste without melting chocolate bars.
Using buttermilk (or a quick substitute) makes the crumb tender and moist. The frosting is cooked on the stove until thick and glossy, so it spreads easily and sets up just right on a sheet cake. Baking it in a 9×13 pan or rimmed sheet pan means fast cook time, even baking, and simple serving.
Shopping List
- For the Cake:
- All-purpose flour
- Granulated sugar
- Unsweetened cocoa powder
- Baking soda
- Baking powder
- Kosher salt
- Buttermilk (or milk + lemon juice/vinegar)
- Neutral oil (canola or vegetable)
- Large eggs
- Vanilla extract
- Hot coffee or hot water
- For the Coconut-Pecan Frosting:
- Unsalted butter
- Evaporated milk (not sweetened condensed)
- Light brown sugar
- Granulated sugar
- Egg yolks
- Vanilla extract
- Sweetened shredded coconut
- Chopped pecans, toasted if possible
- Pinch of salt
Step-by-Step Instructions
- Heat the oven and prep the pan. Set your oven to 350°F (175°C).
Grease a 9×13-inch pan or a 10×15-inch jelly roll pan. Line with parchment for easy lifting, then lightly grease again.
- Whisk dry ingredients. In a large bowl, whisk 2 cups flour, 1¾ cups sugar, ¾ cup cocoa powder, 1½ teaspoons baking powder, 1½ teaspoons baking soda, and 1 teaspoon salt until combined. Breaking up cocoa lumps now gives you a smoother batter later.
- Mix wet ingredients (minus the hot liquid). Add 2 large eggs, 1 cup buttermilk, ½ cup oil, and 2 teaspoons vanilla.
Whisk until glossy and mostly smooth. The batter will be thick—that’s okay.
- Add hot coffee or water. Pour in 1 cup hot coffee (or hot water) and whisk gently until fully combined. The hot liquid blooms the cocoa for better flavor and a looser batter that bakes up tender.
- Pour and bake. Scrape into the prepared pan and smooth the top.
Bake 22–28 minutes for a 9×13 or 18–24 minutes for a jelly roll pan. The cake is done when a toothpick comes out with a few moist crumbs and the center springs back lightly.
- Cool the cake. Place the pan on a rack and let the cake cool until just barely warm. You can frost while slightly warm so the topping hugs the surface, but not so hot that it slides.
- Make the frosting. In a medium saucepan, whisk 1 cup evaporated milk, ½ cup brown sugar, ½ cup granulated sugar, 3 egg yolks, and a pinch of salt.
Add ½ cup unsalted butter (cut into pieces). Cook over medium heat, stirring constantly, until thick, glossy, and bubbling, about 8–10 minutes. It should coat the back of a spoon.
- Finish the frosting. Remove from heat.
Stir in 1½ teaspoons vanilla, 1½ cups sweetened shredded coconut, and 1 cup chopped pecans (toast them first for extra flavor). Let it sit 5 minutes to firm up slightly.
- Frost the cake. Spoon the warm frosting over the cooled or slightly warm cake. Spread to the edges with an offset spatula.
It will set as it cools, making clean slices.
- Serve. Let the topping set 20–30 minutes. Slice into squares and serve as is, or with a small dollop of whipped cream for a lighter contrast.
Keeping It Fresh
German chocolate sheet cake keeps well, which makes it perfect for parties. Cover the pan tightly and store at room temperature for up to 2 days.
For longer storage, refrigerate up to 5 days; bring slices to room temp before serving for the best texture. You can also freeze tightly wrapped slices for up to 2 months. Thaw overnight in the refrigerator and let come to room temperature before serving.
Why This is Good for You
This is a dessert, so it’s about balance and enjoyment.
That said, pecans add healthy fats and a bit of protein, while coconut provides texture and natural sweetness, so you can use a little less frosting than a buttercream. Using oil in the batter keeps the cake moist with less risk of dryness, which means smaller portions still satisfy. And making it in a sheet pan encourages easy, modest slices that are perfect for sharing.
Pitfalls to Watch Out For
- Overbaking the cake: This is the fastest way to lose moisture.
Start checking a few minutes early.
- Frosting too thin: If you undercook the frosting, it won’t set. Cook until it visibly thickens and bubbles, and coats a spoon.
- Skipping the salt: A pinch of salt in both cake and frosting balances sweetness. Don’t leave it out.
- Cold ingredients: Room-temperature eggs and buttermilk blend more easily and help the cake rise evenly.
- Not toasting pecans: A quick toast deepens flavor.
Five to seven minutes in a 350°F oven is enough.
Alternatives
- No buttermilk? Make a quick substitute: 1 cup milk plus 1 tablespoon lemon juice or white vinegar. Let sit 5 minutes.
- Nut-free version: Swap pecans for more coconut or use toasted pumpkin seeds for crunch. Always label for guests with allergies.
- Dairy-free cake: Use a plant-based milk with 1 tablespoon vinegar, and replace butter in the frosting with a dairy-free alternative.
Note the flavor will shift slightly.
- Gluten-free: Use a 1:1 gluten-free all-purpose blend with xanthan gum. Let the batter rest 10 minutes before baking to hydrate.
- Chocolate boost: Add ½ cup mini chocolate chips to the batter or drizzle the finished cake with melted dark chocolate for extra richness.
- Smaller batch: Halve the recipe and bake in an 8×8-inch pan, checking for doneness around 18–22 minutes.
Explore more irresistible cake recipes you won’t want to miss:
Yellow Sheet Cake with Chocolate Frosting
FAQ
Can I make the cake a day ahead?
Yes. Bake the cake, cool completely, cover, and store at room temperature.
Make the frosting the day you serve for the best texture, or spread it on and refrigerate the whole cake. Let it sit out 30 minutes before serving.
What if I don’t have evaporated milk?
You can simmer regular milk to reduce it slightly and concentrate it, but evaporated milk gives the most reliable texture. In a pinch, half-and-half can work, but watch the frosting closely so it thickens properly.
Is the coffee in the batter required?
No, but it enhances the chocolate flavor without making the cake taste like coffee.
If you prefer, use hot water instead. Keep the liquid hot to bloom the cocoa.
How do I know when the frosting is ready?
It should be thick, shiny, and bubbling gently, and it should coat the back of a spoon. If you draw a line through the frosting on the spoon with your finger, it should leave a clear trail.
Can I use a different pan size?
Yes.
A 9×13 pan gives thicker slices and a bit longer bake time. A 10×15 jelly roll pan bakes faster and yields thinner pieces great for parties. Cupcakes also work—bake about 16–20 minutes and top each with a spoonful of frosting.
Do I have to cool the cake before frosting?
Let it cool to just warm.
If it’s too hot, the frosting may thin and slide. Slight warmth helps the topping adhere and set smoothly.
How sweet is this cake?
It’s moderately sweet with a rich chocolate base and a caramel-like coconut-pecan topping. If you prefer less sweetness, reduce the granulated sugar in the frosting by 2–3 tablespoons or use unsweetened coconut.
In Conclusion
This easy German chocolate sheet cake brings classic flavor without the hassle.
The simple batter, stovetop frosting, and one-pan bake make it perfect for birthdays, potlucks, and any time you want guaranteed smiles. With a tender crumb and that signature coconut-pecan topping, it’s a dessert people remember. Keep it straightforward, slice generously, and enjoy the kind of cake that disappears fast.
Easy German Chocolate Sheet Cake Recipe for Any Occasion – Crowd-Pleasing, Simple, and Delicious
Ingredients
- For the Cake:
- All-purpose flour
- Granulated sugar
- Unsweetened cocoa powder
- Baking soda
- Baking powder
- Kosher salt
- Buttermilk (or milk + lemon juice/vinegar)
- Neutral oil (canola or vegetable)
- Large eggs
- Vanilla extract
- Hot coffee or hot water
- For the Coconut-Pecan Frosting:
- Unsalted butter
- Evaporated milk (not sweetened condensed)
- Light brown sugar
- Granulated sugar
- Egg yolks
- Vanilla extract
- Sweetened shredded coconut
- Chopped pecans, toasted if possible
- Pinch of salt
Instructions
- Heat the oven and prep the pan. Set your oven to 350°F (175°C).Grease a 9×13-inch pan or a 10×15-inch jelly roll pan. Line with parchment for easy lifting, then lightly grease again.
- Whisk dry ingredients. In a large bowl, whisk 2 cups flour, 1¾ cups sugar, ¾ cup cocoa powder, 1½ teaspoons baking powder, 1½ teaspoons baking soda, and 1 teaspoon salt until combined. Breaking up cocoa lumps now gives you a smoother batter later.
- Mix wet ingredients (minus the hot liquid). Add 2 large eggs, 1 cup buttermilk, ½ cup oil, and 2 teaspoons vanilla.Whisk until glossy and mostly smooth. The batter will be thick—that’s okay.
- Add hot coffee or water. Pour in 1 cup hot coffee (or hot water) and whisk gently until fully combined. The hot liquid blooms the cocoa for better flavor and a looser batter that bakes up tender.
- Pour and bake. Scrape into the prepared pan and smooth the top.Bake 22–28 minutes for a 9×13 or 18–24 minutes for a jelly roll pan. The cake is done when a toothpick comes out with a few moist crumbs and the center springs back lightly.
- Cool the cake. Place the pan on a rack and let the cake cool until just barely warm. You can frost while slightly warm so the topping hugs the surface, but not so hot that it slides.
- Make the frosting. In a medium saucepan, whisk 1 cup evaporated milk, ½ cup brown sugar, ½ cup granulated sugar, 3 egg yolks, and a pinch of salt.Add ½ cup unsalted butter (cut into pieces). Cook over medium heat, stirring constantly, until thick, glossy, and bubbling, about 8–10 minutes. It should coat the back of a spoon.
- Finish the frosting. Remove from heat.Stir in 1½ teaspoons vanilla, 1½ cups sweetened shredded coconut, and 1 cup chopped pecans (toast them first for extra flavor). Let it sit 5 minutes to firm up slightly.
- Frost the cake. Spoon the warm frosting over the cooled or slightly warm cake. Spread to the edges with an offset spatula.It will set as it cools, making clean slices.
- Serve. Let the topping set 20–30 minutes. Slice into squares and serve as is, or with a small dollop of whipped cream for a lighter contrast.