Name: Gluten-free Apple Cake with Streusel Topping
Prep time: 30 min
Cook time: 50 min
Total time: 80 min
Ingredients: 2 1/2 cups Gluten-free Baking Flour with Xanthan gum, (such as Namaste Perfect Flour Blend); 1 teaspoon baking powder; 1 teaspoon baking soda; 2 teaspoons ground cinnamon; 3/4 teaspoon salt; 1 cup butter, (softened); 1 cup granulated sugar; 1/2 cup brown sugar; 3 eggs; 1 cup buttermilk, (see notes for substitution); 2 cups peeled, cored, & diced Granny Smith apples, (see notes for apple types, do not add extra apples); 1/2 cup granulated sugar; 1/4 cup gluten-free flour; 2 tsp cinnamon; 4 tablespoons cold butter, (cut into pieces); 3/4 cup chopped pecans or walnuts, (optional)

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Nothing says fall to me more than apple picking and making this Gluten-free Apple Cake! This old-fashioned apple cake is made from scratch with fresh apples. The tart apples are balanced with a sweet streusel topping and notes of warm cinnamon.

Gluten-free Apple Crumb Coffee cake cut into squares in a baking dish.

This apple cake recipe is near and dear to my heart. It comes from a cookbook, Classic Home Desserts by Richard Sax, which I received a copy of as a kid. I would spend hours flipping through the pages of this cookbook, looking at the recipes, and then finding the corresponding picture in the middle of the book. I used to love reading the excerpts at the beginning of each recipe and the little historical tidbits in the margins. For whatever reason, this recipe stood out to me. After I made it, I fell in love instantly, and have subsequently, made this cake every year since.

After going gluten-free, I knew this was one recipe I absolutely had to revamp. Much to my dismay, it took many, many tries, and a lot of determination to get it just right. That’s the thing about gluten-free baking, sometimes it’s tricky, kind of daunting, and not always perfect. Some attempts sank in the middle, one attempt was overdone on the edges but underdone in the center, the streusel topping and apples completely sunk in yet another attempt. All that to say, after much tweaking and research, I’ve finally figured out how to make my favorite gluten-free apple cake, just like I remember it!

What’s to Love

Old-fashioned, homey, and made from scratch, just like Grandma used to make.
The streusel topping adds sweetness and texture.
It’s the perfect fall spice cake with lots of cinnamon.
You can use a variety of tart baking apples.
Since it’s so moist, it keeps well for up to three days.
The recipe can be halved and baked in an 8 or 9-inch square pan.

Ingredients

Gluten-free Flour Blend: I used Namaste Perfect flour blend in this recipe. I’m confident other gluten-free flour blends would also work well in this recipe, such as Bob’s 1-1 baking flour or Pamela’s Artisan Blend.
Apples: You’ll want to use a tart apple that is good for baking since the rest of the cake is pretty sweet. Cortland, Granny Smith, and Golden Delicious are all great baking apples and one or a mixture of these work great in this recipe.

Pro-tip! Don’t use more apples than the recipe calls for! Adding extra apples will affect the result! Gluten-free flours don’t absorb extra moisture as well as regular flour and because the apples add so much moisture, it’s important not to overdo it. Adding too many apples will result in an overly moist, soggy, dense cake.

Buttermilk: I recommend using real buttermilk, but if you don’t have any, you can make a substitute using regular milk and lemon juice or vinegar:
- Put 1 tablespoon lemon juice or apple cider vinegar in a measuring cup.
- Fill with regular milk up to the 1 cup mark.
- Let stand for 5 minutes.
Eggs
Butter
Sugars
Cinnamon
Nuts: Walnuts and Pecans are both delicious in this cake! The cake is still delicious even without any nuts! So, you do you!

*I haven’t tested dairy-free or egg-free substitutes in this recipe. I will update this post as I experiment with these options.

Make the Cake

Whisk the dry ingredients.
Cream the butter with sugars and then the eggs.
Blend in the buttermilk alternately with the dry ingredients.
Then stir in the apples.
Spread the batter into a greased 9×13 inch cake pan.

A collage showing the steps of mixing wet ingredients, alternately adding buttermilk, then dry ingredients, and stirring in the diced apples.

Make the Streusel Topping

Make the streusel topping by cutting the ingredients together with a pastry knife.
Sprinkle the topping evenly over the cake.
Bake the apple cake until a toothpick inserted in the center comes out clean and the top springs back when gently touched.

A collage showing the batter spread in a baking pan, then cutting together the streusel topping, then sprinkling evenly over the top.

Pro-tip! Due to the streusel topping, it is sometimes hard to tell when this cake is finished. I have found it is better to bake the cake a few minutes longer than to underbake it. If you’re not sure if it’s finished, let it go another 5-10 minutes. It’s an already very moist cake and the extra bake time doesn’t hurt the outcome at all.

Serving and Storing

Allow the cake to cool slightly before cutting into large squares for serving. It is delicious when served still warm from the oven and still perfect yet up to a few days later when eaten for breakfast! Store this cake at room temperature, tightly wrapped for up to 3 days. If you are baking this cake for an occasion, it is best fresh, so bake as close to the day of serving as possible.

The finished apple cake in a pan, already cut into squares, with a couple slices removed.

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If you loved this gluten-free apple cake and you’re looking for more fall recipes, take a peek at my other favorites!

This Peanut Butter Caramel Apple Dip is so easy and tastes just like a caramel apple!
I love these classic Gluten-free Pumpkin Bars with Cream Cheese Frosting!
Try these Gluten-free Apple Crisp Cups for a fun, personal-sized twist on apple pie!

Slices of gluten-free apple cake on parchment paper.

5 from 2 votes