BROWN BUTTER, GINGER, AND SOUR CREAM COFFEE CAKE

Brown Butter, Ginger, and Sour Cream Coffee Cake image

Provided by Bon Appétit Test Kitchen

Yield Makes 8 to 10 servings

Number Of Ingredients 25

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Brown butter:
2 cups plus 2 tablespoons (4 1/4 sticks; or more) unsalted butter
Topping:
1 1/4 cups all-purpose flour
1 cup (packed) dark brown sugar
1/4 teaspoon kosher salt
1/2 cup chopped crystallized ginger
Cake:
Unsalted butter (for pan)
2 cups all-purpose flour
3/4 cup whole wheat flour
1 tablespoon baking powder
1 teaspoon kosher salt
1 teaspoon ground cinnamon
1 teaspoon ground ginger
3/4 teaspoon baking soda
1/2 teaspoon ground allspice
1 3/4 cups sugar
4 large eggs
1 1/2 cups sour cream
1/2 cup whole milk
1 tablespoon vanilla extract
3/4 cup almonds with skins, coarsely chopped
Special Equipment
A nonstick 10" tube pan with removable bottom

Steps:

For brown butter:
Simmer 2 cups plus 2 tablespoons butter in a large nonstick skillet over medium heat until browned bits form, 6-8 minutes. Pour into a 2-cup measuring cup. If needed, add more butter to measure 1 3/4 cups plus 2 tablespoons (added butter will melt).
For topping:
Whisk flour, sugar, and salt in a medium bowl. Stir in 3/4 cup plus 2 tablespoons brown butter (reserve remaining butter for cake); stir until moist clumps form. Stir in ginger. Set aside.
For cake:
Preheat oven to 325°. Butter pan generously. Whisk all-purpose flour and next 7 ingredients in a medium bowl. Using an electric mixer, beat remaining 1 cup browned butter and sugar in a large bowl until light and thick, 2-3 minutes. Add eggs one at a time, beating to blend between additions. Beat in sour cream, milk, and vanilla. Stir in flour mixture just to blend.
Spoon half of cake batter into prepared pan; smooth top. Scatter 1 cup of topping over. Spoon remaining batter in dollops over; smooth. Add almonds to remaining topping; squeeze to form 1/2" clumps and scatter evenly over batter in pan.
Bake until a tester inserted into center of cake comes out clean, about 1 hour 20 minutes. Let cool in pan on a wire rack for 10 minutes. Run a knife around edge of pan to release cake. Remove pan sides; let cool completely. DO AHEAD: Can be made 1 day ahead. Store airtight at room temperature.