Sour Cream Coffee Cake

I love the combination of sugar, nuts and cinnamon. That's exactly what makes this sour cream coffee cake delicious. I was flipping through The Essential Baker looking for inspiration for an afternoon cake to serve my friends and came across this recipe. I hadn't had coffee cake in a while and it sounded easy to make so I went for it. It did turn out to be very easy and quick to make. And it tastes really good! Guess what's for breakfast tomorrow...

6 ounces (165 g/ 12 tablespoons/ 1 1/2 sticks) unsalted butter, softened

1 1/2 cups granulated sugar

3 extra-large eggs, at room temperature

1 cup sour cream

2 teaspoons pure vanilla extract

3 cups all-purpose flour

1 tablespoon baking powder

1/2 teaspoon salt

1/2 cup walnuts, finely chopped

1/4 cup granulated sugar

1/4 cup firmly packed light brown sugar

1/2 teaspoon ground cinnamon

Center a rack in the oven and preheat to 350°F (177°C). Generously butter the inside of a 9 1/2-inch (26 cm) round spring-form pan. In a large bowl, beat the butter on medium speed until it's fluffy, about 2 minutes. Add the sugar and cream together well. Add the eggs one at a time, mixing well between each addition. Add the sour cream and vanilla and blend together thoroughly. In a separate bowl, sift together the flour and baking powder. Add the salt and toss together to blend. Add the dry ingredients to the butter mixture in 3 stages, blending thoroughly after each. 

For the topping, combine the walnuts, sugar, brown sugar, and cinnamon in a small bowl and toss together to blend thoroughly.

Transfer half of the batter to the prepared pan. Use a rubber spatula to spread it evenly. Sprinkle half the topping over the batter in the pan. Transfer the remaining batter to the pan and spread it out evenly over the topping. Sprinkle the remaining topping over the batter. Bake the cake for 40-45 minutes until a cake tester inserted into the center comes out with a few moist crumbs clinging to it. Remove the pan from the oven and cool on a rack.