2 1/2sticks of unsalted butterroom temperature, plus a little more for the pan
2 1/2cupsall-purpose flourplus a little more for the pan
2teaspoonground cardamom
1 1/2teaspoonbaking powder
3/4teaspoonkosher salt
1/4teaspoonbaking soda
3tablespooninstant espresso powderor dark roast
1tablespoonpure vanilla extract
3/4cuppacked dark brown sugar
3/4cupgranulated sugar
3large eggsroom temperature
3/4cupsour creamroom temperature
Glaze
3/4cupsweetened condensed milk
2tablespoonunsalted butter
1large egg yolk
1/2teaspoonkosher salt
1/4teaspooninstant espresso powderor dark roast
1/2cupwalnutschopped
Instructions
preheat the oven to 350' F. butter and flour a 12-cup bundt pan
In a medium bowl, whisk together the flour, cardamom, baking powder, salt and soda.
in a large mixing bowl, combine the coffee and vanilla. Add the sugars and butter and beat with an electric mixer on medium until fluffy. about 4 minutes. beat in the eggs one at a time until well combined.
reduce speed to low and alternate adding the flour mixture and the sour cream. Ending with the flour and mix just till combined.
Add the batter to the pan and smooth the top.
Bake until the cake is puffed up and test with a skewer in the center, remove it from the oven when the skewer comes out clean. 45-55 minutes. Check it at 40 minutes if using a dark pan.
Transfer the cake to a wire rack to cool in the pan for 15 minutes, then flip the cake onto the rack to cool completely.
Prepare the Glaze
in a small saucepan, heat the condensed milk, butter, egg yolk, salt and coffee over medium-low heat, stirring constantly, until thickened. about 4 minutes. drizzle while warm over the cooled cake. top with chopped walnuts.