Step 1 of 9
New York Crumb Cake
Preheat the oven to 350°F.
Tools
Step 2 of 9
New York Crumb Cake
Spray a 9- or 10-inch square cake pan liberally with nonstick cooking spray. Set aside.
Tools
Step 3 of 9
New York Crumb Cake
Place the butter, sugar, and vanilla in a large mixing bowl. Use a mixer to cream the ingredients together on medium-high speed until smooth, 1-2 minutes. Add the eggs, sour cream, and buttermilk, and continue beating until the mixture is light and fluffy, about 1 minute.
Tools
Step 4 of 9
New York Crumb Cake
Sift the flour, baking powder, baking soda, and salt into the bowl. Mix on low speed, scraping down the sides of the bowl with a rubber spatula as needed, until a smooth, thick batter forms.
Tools
Step 5 of 9
New York Crumb Cake
Scrape the batter into the prepared pan with a rubber spatula and smooth it into an even layer.
Tools
Step 6 of 9
New York Crumb Cake
Place the flour, brown sugar, granulated sugar, cinnamon, and salt in a large mixing bowl and stir with a fork to combine. Drizzle in the melted butter, and mix until the mixture forms large crumbs. Sprinkle the crumble evenly over the cake batter.
Tools
Step 7 of 9
New York Crumb Cake
Bake the cake on middle rack of oven until the topping is golden and a toothpick inserted in the center comes out clean, 35-45 minutes.
Tools
Step 8 of 9
New York Crumb Cake
Check to see that cake is done. Remove from oven or add time as needed.
Tools
Step 9 of 9
New York Crumb Cake
Allow the cake to cool in the pan for 15-20 minutes before serving. To store, cover tightly with aluminum foil or plastic wrap and keep at room temperature for 1-2 days, refrigerate for up to 1 week, or freeze for up to 3 months.
