1cupmilkOr substitute milk and lemon juice/ vinegar with ready made buttermilk
1tablespoonlemon juice or white vinegar
¾cuppacked light brown sugar
2teaspoonsground cinnamon
½cupwalnutstoasted and chopped (see note for how to toast walnuts)
2-1/4cupsall-purpose flour
1teaspoonbaking powder
1teaspoonbaking soda
½teaspoonsalt
½cupunsalted butter
1cupgranulated sugar
2large eggs
1teaspoonpure vanilla extract
⅓cupsemi-sweet chocolate chips or chunksmelted and cooled
Instructions
Position a rack in the center of the oven and heat the oven to 350°F.
Grease and flour a large bundt pan.
In a liquid measuring cup, measure 1 cup of milk and add 1 tablespoon of lemon juice or white vinegar. Set aside.
In a small bowl combine brown sugar, cinnamon and walnuts. Set aside.
In a medium bowl, combine the flour with the baking powder, baking soda and salt, whisk and set aside.
Melt the chocolate in the microwave in 15 second increments, stirring after each time until the chocolate is melted.
In the bowl of your stand mixer fitted with the paddle attachment, beat the butter on medium speed until smooth, about 1-2 minute.
Add the granulated sugar and beat for about 2-3 minutes, until fluffy. Add the eggs, one at a time, beating after each addition.
Add the vanilla extract.
With the mixer on low, add the flour mixture alternately with the milk mixture, beginning and ending with the flour mixture. Beat the mixture on medium speed until the batter is smooth, stopping a couple of times to scrape the bowl.
Transfer half the batter into the prepared bundt pan, drizzle the melted chocolate over the batter and add half of the brown sugar mixture.
Add the remaining batter over the filling and use a butter knife to swirl the filling.
Sprinkle the rest of the brown sugar mixture over the cake.
Bake for approximately 35 minutes or until a toothpick comes out clean.
Let the cake cool in the pan on a rack for 15 minutes and then turn out to cool completely.
Notes
Toasting the walnuts before adding them to the batter will enhance their flavour. You can toast walnuts in a 350ºF oven for about 10 minutes or until fragrant, let cool and chop coarsely.