Streusel Coffee Cake
Total Time
60 minutes
Prep Time
30 minutes
Cook Time
30 minutes
Rating
4.88 out of 5 stars
(8)
Ingredients
12 servings
- Streusel
- 1 1/3 cups [189 g] all-purpose flour
- 1 cup [100 g] almond flour
- 2/3 cup [135 g] granulated sugar
- 2/3 cup [135 g] light brown sugar
- 1 tablespoon ground cinnamon
- ¼ teaspoon salt
- 12 tablespoons [1 ½ sticks or 170 g] unsalted butter, at room temperature, cut into 12 pieces
- Cake
- 1 cup [240 g] whole milk, at room temperature
- 1 scant cup [210 g] large egg whites, from 6 or 7 eggs, at room temperature
- ½ cup [120 g] crème fraiche or sour cream, at room temperature
- 1 tablespoon pure vanilla extract
- 2 ¾ cups [391 g] all-purpose flour
- 2 cups [400 g] granulated sugar
- 4 teaspoons baking powder
- 1 teaspoon salt
- 1 cup [2 sticks or 227 g] unsalted butter, at room temperature, cut into 1 in [2.5 cm] pieces
- Cream cheese filling
- 4 oz [113 g] cream cheese, at room temperature
- 2 tablespoons granulated sugar
- Icing
- 1 ½ cups [180 g] confectioners’ sugar
- 2 to 4 tablespoons [30 to 60 g] water
- 1 tablespoon unsalted butter, melted
- ½ teaspoon pure vanilla extract
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Preparation
Step 1
For the streusel: In the bowl of a stand mixer fitted with a paddle, combine the all-purpose and almond flours, granulated and brown sugars, cinnamon, and salt on low speed. Add the butter one piece at a time, until the mixture comes together but still quite crumbly. Set aside 1 ½ cups [188 g] of the streusel to use on the cake, then store the remaining streusel in an airtight container in the refrigerator for up to 1 week, or freeze in a freezer-safe bag for up to 1 month.
Step 2
For the coffee cake: Adjust an oven rack to the middle position and preheat the oven to 350F [180C]. Grease a 9 by 13 in [23 by 33 cm] pan and line it with a parchment sling.
Step 3
In a medium bowl or liquid measuring cup, whisk together the milk, egg whites, crème fraiche, and vanilla. In the bowl of a stand mixer fitted with a paddle, combine the flour, granulated sugar, baking powder, and salt. With the mixer running on low speed, add the butter one piece at a time, beating until the mixture resembles coarse sand. With the mixer still running on low speed, slowly add a little more than half of the wet ingredients. Increase the speed to medium and beat until the ingredients are incorporated, about 30 seconds. Lower the speed to low and add the rest of the wet ingredients, mixing until just combined. Increase the speed to medium and beat for 20 seconds (the batter may still look a little bumpy). Scrape down the sides and bottom of the bowl and use a spatula to mix the batter a few more times. Pour all but 1 tablespoon of the batter into the prepared pan and smooth the top.
Step 4
For the cream cheese filling: In a small bowl, whisk together the cream cheese, granulated sugar, and the reserved 1 tablespoon of cake batter. Dollop the cream cheese filling over the cake and use a knife or an offset spatula to swirl it into the batter. Sprinkle the set aside streusel [1 ½ cups | 188 g] evenly over the top. Tap the pan gently on the counter twice to help get rid of any air bubbles. Bake for 28 to 50 minutes* (SEE NOTE), rotating the pan halfway through, until the cake is golden brown and a wooden skewer or toothpick inserted into the center comes out with a faint bit of crumbs. Transfer the cake in the pan to a wire rack and let cool for 5 minutes.
Step 5
For the icing: While the cake is baking, in a medium bowl, whisk together the confectioners’ sugar, 2 tablespoons of the water, the melted butter, and vanilla until smooth. Add more water, 1 tablespoon at a time, to thin the icing to your preferred consistency. Pour half of the icing over the warm cake and let sit for 20 minutes, then pour the remaining icing over the cake and let sit while the cake finishes cooling. Remove the cake from the pan using the parchment sling. Cut into pieces and serve. Alternatively, the cake can be left in the pan and covered in plastic wrap, then stored in the refrigerator for up to 2 days.
Step 6
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Chef's notes
Notes:
If, while baking, the streusel sinks towards the middle of the cake, you can sprinkle more on the edges. I check for this halfway through baking when I rotate the cake; if the edges need more streusel I sprinkle it over the bare parts at this point.
All ovens are unique. When I sent this recipe out to testers, I got back a wide variety of times back on when the cake was finished, due to different oven brands and different oven sizes. If at 28 minutes your cake is still very liquid-y, please do not panic! Just keep baking the cake, checking frequently to see when it is done. This cake can take up to 50 minutes to bake.
Quick oats can be substituted for the almond flour in the streusel if needed.
Raspberry variation:
Combine ¾ cup [240 g] raspberry jam with 1 tablespoon water in a small saucepan. Warm over low heat just until the jam is loose. Let the mixture cool to room temperature (this helps loosen the jam so it doesn’t fall in blobs into the cake. If your jam is already very loose, you don’t need to add the water). Omit the cream cheese filling and instead dollop the jam over the cake and use a knife or an offset spatula to swirl it into the batter before adding the streusel. For the icing, mix 3 oz of raspberries with 1 tablespoon of water, then add 1 ½ cups [180 g] confectioners’ sugar to the mixture, stirring to combine. If the mixture is too thick to pour, add water, a little at a time, to thin the icing to your preferred consistency.
