Vanilla and Chocolate Marbled Bundt Cake

INGREDIENTS

To Grease the Pan

1 tbsp

unsalted butter, at room temperature

2 tbsp

flour

For the Chocolate Syrup

1/2 cup

granulated sugar

1/2 cup

natural cocoa powder (not Dutch-process)

1/2 cup

freshly brewed strong hot coffee

1/4 cup

honey

1/2 tsp

vanilla extract

For the Cake Batter

2 cups

granulated sugar

1 cup

unsalted butter, at room temperature (2 sticks)

2 tsp

vanilla extract

large eggs, at room temperature

1 tsp

baking powder

1 tsp

baking soda

1/2 tsp

kosher salt

all-purpose flour

1 cup

buttermilk

1 cup

semisweet chocolate chips

For the Vanilla Bean Glaze

vanilla bean or 1 tablespoon vanilla extract

1/4 cup

whole milk

to 2½ cups powdered sugar