This cinnamon apple crumb cake is a riff on an American coffee cake made with sour cream for a rich cake, topped with sliced apples and a thick layer of cinnamon streusel crumbled on top.
The old-fashioned sour cream coffee cake from Flour bakery is unbelievable. It's moist, a little dense, with a fantastic crumb. It's unbelievably good. I'd eat it all day long if I could. Flour bakery often uses crème fraîche, which is an acidic ingredient, much like sour cream. Sour cream has a fat content of about 14 %, while crème fraîche hovers around 40 % fat. That extra fat does wonders for cakes and baked good adding so much flavour, yielding a moist cake that is a little more dense, but dense in a good way!
Unfortunately, crème fraîche isn't very easy to find in grocery stores. Sometimes they have it and sometimes they don't. Sour cream is definitely more readily available and so for this cinnamon apple crumb cake, I used sour cream, which is a great baking substitution to keep in mind.
The best part of coffee cakes and crumb cakes is the deliciously crumbly streusel topping. Of course, the problem with coffee cake is also the deliciously crumby streusel topping. Streusel is a great topping for cakes and muffins, and it's often made with equal parts of flour, ground nuts, sugar, and butter, by weight.
This is quite different from a crumble topping like on this apple crumble cake where the crumble topping is more clumpy and made with oats, like it might be on an apple crisp. Streusel is made with melted butter and the crumble is made with softened, room temperature butter. The textures are quite different.
If you want more ways to play with streusel, make these strawberry rhubarb muffins with streusel topping, these rhubarb muffins with sour cream, or these honey blueberry muffins.
This coffee cake is light, moist and comforting. I made the streusel topping from a graham flour mixture I'd put together when making homemade graham crackers. Remember that graham flour is a nutty mixture of flours made from wheat germ and whole wheat flour, so it goes perfectly with the thin layer of sliced tart apples just below it. This has less apples than the apple yogurt cake, but that's to make room for the cinnamon streusel. Worth it!
If you'd prefer to eat your coffee cake in the form of a muffin, give these plum cardamom coffee cake muffins a try!
Cinnamon apple crumb cake
Equipment
Ingredients
Streusel ingredients:
- 60 grams (½ cup) all-purpose flour
- 30 grams (¼ cup) whole wheat flour
- 10 grams (1 tablespoon) wheat germ
- 7.5 mL (1½ teaspoon) ground cinnamon
- 100 grams (½ cup) dark brown sugar
- 58 grams (¼ cup) unsalted butter melted
Cake ingredients:
- 250 grams (2 cups) all-purpose flour
- 5 mL (1 teaspoon) baking powder
- 2.5 mL (½ teaspoon) baking soda
- 2.5 mL (½ teaspoon) Diamond Crystal fine kosher salt
- 115 grams (½ cups) unsalted butter room temperature
- 250 grams (1¼ cups) light brown sugar
- 7.5 mL (1½ teaspoon) pure vanilla extract
- 2 large eggs room temperature
- 250 mL (1 cup) sour cream (14% fat) or crème fraîche
- 1 apple such as Cortland, peeled, cored and sliced thin
Instructions
- Prepare a 9x9 inch square brownie pan (or cake pan) by buttering and flouring it, lining the bottom with a square of parchment. Set aside
- Preheat the oven to 175 ºC (350 ºF).
Streusel
- With a fork, stir together all the streusel ingredients in a small bowl. Continue mixing until the streusel clumps a little and all the dry ingredients are moistened. Set aside.
Cake
- In a medium bowl, whisk together the flour, baking soda and salt. Set aside for later.
- In the bowl of an electric mixer fitted with the paddle attachment, cream the butter and the light brown sugar. Add the vanilla, followed by the eggs, one at a time, scraping down the bowl as needed between each addition.
- With the mixer on low, add the dry ingredients alternately with the sour cream, beginning and ending with the dry ingredients. Give the cake batter a couple stirs with your spatula to be sure all the ingredients have been evenly incorporated and the batter is smooth.
Assembly and baking
- Spread the batter evenly in the prepared cake pan.
- Top with a layer of the thinly sliced apple. Press them down gently.
- Sprinkle the prepared streusel topping over the apples. Press the streusel down gently.
- Bake the coffee cake for 40–50 minutes, checking it with a cake tester to be sure it is done.
- Let the coffee cake cool completely in the pan on a wire rack before serving.
healthyfoodietravels says
Oooh, I love graham crackers in my cakes! And with apple? Sounds absolutely amazing. I love the pattern on the plate, too, gorgeous photography.
Tina says
Graham crackers and apple-what a terrific combination! How I would love to have this with my morning coffee-yum! Your picture here is pretty tempting-well done.
Baker Street says
Graham crackers and apple are a lovely combination! Your cake looks absolutely divine!
Medeja says
Mmm.. it looks really yummy! Perfect cake for tea time.
Barbara | Creative Culinary says
Love the idea of graham flour; I can only imagine how good this is. The little bit that actually made it into your tummy. 🙂
A Spoonful of Yumm says
looks so good !!!
claire @ the realistic nutritionist says
Nothing better than old fashioned comfort food. Looks amazing!!
Torviewtoronto says
lovely cake and pictures
Balvinder ( Neetu) says
Lovely cake!
Rhonda says
I was just thinking to myself that I have not made a coffee cake in years! They are fairly easy (albeit a little messy too), so why haven't I? Thanks for inspiring me to make an old favorite.
Roxana GreenGirl says
apple, graham flour and streusel - sounds good if you ask me. and looking at your photos looks so tempting too!
Rituparna says
what an amazing combination. Your pictures are making me really hungry.
Ally says
This looks like the perfect cake to accompany a hot cup of coffee or tea...
xo
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