Step 1 of 15
One-Bowl Cranberry Breakfast Buckle
Preheat the oven to 350°F.
Step 2 of 15
One-Bowl Cranberry Breakfast Buckle
Grease a 9x13-inch baking pan with nonstick cooking spray. Dust with flour, shaking out any excess. Set aside.
Step 3 of 15
One-Bowl Cranberry Breakfast Buckle
Sift the flour, baking powder, and salt into a stand mixer bowl or large mixing bowl.
Step 4 of 15
One-Bowl Cranberry Breakfast Buckle
Add the butter and brown sugar and blend on medium-low speed until the butter forms coarse crumbs.
Step 5 of 15
One-Bowl Cranberry Breakfast Buckle
With the mixer on low speed, add the vanilla, eggs, and yolk one at a time, mixing until combined. Scrape down the sides of the bowl as needed.
Step 6 of 15
One-Bowl Cranberry Breakfast Buckle
Add the buttermilk and increase speed to medium. Beat until the batter is smooth, about 30 seconds, scraping the bowl if needed. Gently fold the cranberries into batter.
Step 7 of 15
One-Bowl Cranberry Breakfast Buckle
Spread the batter evenly in the prepared pan. Sprinkle with the remaining cranberries and set aside. Wipe the bowl clean.
PRO TIP Scrape the bowl well (wipe it with a paper towel if necessary), as you'll be reusing it to make the crumb topping.
Step 8 of 15
One-Bowl Cranberry Breakfast Buckle
Cut the butter into small cubes and add to the now-empty bowl.
Step 9 of 15
One-Bowl Cranberry Breakfast Buckle
Add the brown sugar, flour, and salt. Using a pastry blender or your fingers, cut in or rub the butter into dry ingredients until mixture is evenly blended.
Step 10 of 15
One-Bowl Cranberry Breakfast Buckle
Break the topping into 1/2- to 1-inch lumps and scatter over the buckle. (Topping won't cover buckle completely.)
Step 11 of 15
One-Bowl Cranberry Breakfast Buckle
Bake the buckle on middle rack of oven for 30 minutes.
Step 12 of 15
One-Bowl Cranberry Breakfast Buckle
Rotate pan and continue baking until a toothpick inserted in the center of buckle comes out clean, 30-40 minutes.
Step 13 of 15
One-Bowl Cranberry Breakfast Buckle
Check to see that buckle is done. Remove from oven or add time as needed.
Step 14 of 15
One-Bowl Cranberry Breakfast Buckle
Set the pan on a cooling rack and let cake cool to room temperature, about 1 1/2 hours.
Step 15 of 15
One-Bowl Cranberry Breakfast Buckle
Cut the cake into slices and serve. Cover any leftovers and store at room temperature for up to three days.