German Apple Sheet Cake

Classic German apple sheet cake with a soft, tender base, juicy cinnamon apples, and buttery streusel-an easy sheet pan dessert perfect for fall, potlucks, and cozy Sunday coffee.

If you're searching for an easy, crowd-pleasing dessert, look no further than the classic German Apple Sheet Cake, known as Apfel Streuselkuchen. This beloved treat combines tender apples, a perfectly moist cake, and a sweet, crumbly streusel-all baked in a simple sheet pan. Authentic, adaptable, and irresistibly cozy, it's the ideal recipe for beginners and experienced bakers alike.

What Is German Apple Sheet Cake?

German apple sheet cake is a traditional dessert topped with crunchy, cookie-like streusel and filled with juicy apples. Unlike American crumb toppings, German streusel creates a rich, biscuit-like crust on top and becomes delightfully soft where it meets the apples. Sheet cakes are popular in Germany for their simplicity and ability to serve a crowd-think birthday parties, family gatherings, or potlucks.

Why You'll Love This Recipe

• German Apple Sheet Cake is easy, delicious and great for large parties, pot lucks or family get-togethers! The dough is perfectly sweet, with slightly tart apple filling and the perfect amount of crumb topping. So delicious! The yummy apple chunks will satisfy your sweet tooth not just in the fall but throughout a year.
• It's also beginner-friendly and ideal for first-time bakers.
• Authentic German streusel flavor and texture is out of this world delicious and easy to make!

Key Ingredients for Authentic Flavor

• Apples: German favorites are Elstar or Jonagold, but my personal favorites are Fuji and Granny Smith. The combination of sweet and tart apples creates a balanced cake.
• Applesauce: Using unsweetened applesauce delivers moisture without making the cake overly sweet. Sweetened applesauce is an option if you prefer a dessert with more sugary punch.
• All-Purpose Flour and Butter: Making both the base and streusel from scratch gives this cake its signature texture and flavor.
• Sugar: Granulated or Turbinado sugar keeps the crumb topping true to the German original.
• Eggs: You will need to for the dough.
• Vanilla: Adds warm depth to the filling.
• Salt and Baking Soda: I always use both because salt imparts more flavor to the dough than just sugar as well as enhances sweet taste. Baking soda makes the cake rise.

How to make German Apple Sheet Cake

Prepare the batter by mixing dry and wet ingredients together in a large bowl. Knead.

Once you prepared the dough, now halve it equally. Then shape each half into a ball. Roll out each ball into large flat ovals using a rolling pin. You can roll it out on a cutting board or on top of a parchment paper.

Before arranging the apple slices over the batter, I sometimes toss them gently in sugar. Just a tablespoon, otherwise the cake will leak. You can also add cinnamon if you like.

Next, layer the apple slices over the cake batter.

Add second layer on top. Using a fork, pierce it in multiple places and make a hole in the middle of the top layer.

Now sprinkle crumb topping on top. Bake!

Cut it up into small bars and serve. Enjoy with a cup of coffee or hot chocolate!

Expert Tips for Success

• Don't overwork your dough-gentle mixing yields a tender base.
• You don't have to have perfectly rolled out dough. The top part especially can be added in patches - it will bake up beautifully similar to the cobbler so don't stress out if the dough is too sticky and tears.
• Use flour on your hands to prevent dough from sticking.
• Bigger streusel clumps make the topping extra delicious.
• Refrigerate after cooling for a cake that holds its shape and stays moist.
• Serve warm with vanilla ice cream, cold for snacking, or on a festive buffet.
• Authentic German cakes use only granulated sugar; brown sugar adds a different, more American-style flavor.

Why is my German apple sheet cake soggy on the bottom?

Soggy bottom usually means the apples released too much liquid or the cake was underbaked in the center. Using very juicy apples, slicing them too thick, crowding them in a small pan, or pulling the cake out too early all trap moisture and prevent the crumb from setting. This is what I recommend:

• Use baking apples that hold shape (Granny Smith or Fuji) and slice them thin so they cook through faster.
• Bake on the center rack until the edges are deeply golden and the center springs back lightly to the touch; extend bake time in a glass or very full pan.

Why is my German apple sheet cake dense instead of light and fluffy?

A dense, heavy cake often points to too much flour, old baking soda, or overmixing once the flour is added. Usually what I do is I start with 2 cups of flour and always use ½ cup more, sometimes 1 cup more. Then I cream butter and sugar long enough to look pale and fluffy if using a butter-based batter; that air helps the cake rise.

Why are my apples still crunchy after baking?

If your apples are still firm, they were likely sliced too thick, piled too heavily, or the cake was baked at a lower temperature or for too short a time.

• Slice apples thinly and evenly so they soften in the same amount of time as the cake base.
• Fan apples in a single, slightly overlapping flat layer instead of stacking them into a pile.

FAQ

• Can I use oil instead of butter? Yes, neutral oil works! It also makes a cake very moist, but you'll lose some buttery flavor. You can replace melted butter in the batter 1:1 with neutral oil (like canola, sunflower, or light olive). But, keep butter in the streusel topping and for greasing the pan for the best flavor and crumb texture.
• What can I use instead of sour cream? Buttermilk boosts moisture and tenderness and greek yogurt is another common bakery trick for ultra‑moist cakes.
• To make it dairy free: German apple sheet cake is easy to adapt by swapping sour cream and butter with coconut milk for plant‑based alternative. Use vegan butter sticks in the same amount for both batter and streusel.
• To make it egg free: For one egg, you can often use 3-4 tablespoons of unsweetened applesauce or mashed banana. You can also use a commercial egg replacer according to package directions for each egg.
• Can I use other fruit? Absolutely! Plums or pears can be substituted for apples for seasonal variation.
• Do I need a stand mixer? No. You can mix the dough and streusel by hand, with a spatula or with a whisk.

Variations and Substitutions

• Swap in a mix of tart and sweet apples for depth.
• Add a pinch of nutmeg or cardamom for a spiced twist.
• Use sweetened applesauce for a sweeter cake; decrease granulated sugar slightly to adjust.
• Make it dairy-free by using plant-based butter.

Can I make German Apple Sheet Cake ahead

One of the huge advantages of this cake is that you can make the dough ahead of time. It's a great option for the days when your craving for something sweet hits. The dough can be refrigerated for a few days or kept in the freezer for up to a month. Then it's as simple as rolling out the dough, adding the filling, the topping, and baking.

What size baking sheet should I use

I used a baking sheet 18x13 inches with a 1 inch rim, but the cake fits only into a part of the baking sheet. Therefore you can use a smaller one.

Serving Suggestions

Serve slightly warm or at room temperature, plain or with a dusting of powdered sugar, whipped cream, or vanilla ice cream. Many bakers like it chilled from the fridge the next day, when the crumb sets and the apple flavor intensifies.

Storage and Leftovers

• How do I keep German apple sheet cake moist for days? Let the cake cool completely, then cover it tightly and store it at cool room temperature for a day or two or refrigerate for longer. Using enough fat (butter or oil) and not overbaking are the biggest factors in long‑lasting moisture.
• Store this Russian Apple Cake at a room temperature for up to 3 days covered with a clean towel. Do not use air tight containers if storing outside the fridge. You will want some air flow.
• Refrigerate it in the air tight container for up to one week.
• Or, wrap each apple crumb bar in a Saran Wrap and freeze them individually for up to one month. This way you can easily defrost each small piece when you sweet tooth demands it.

And remember that an apple a day keeps a doctor away!

More International Apple Cake Recipes

• French Apple Cake
• Easy Jewish Apple Cake
• Italian Apple Bundt Cake
• Tarte Tatin with Brandy Caramelized Apples