Cinnamon Swirl Loaf

INGREDIENTS

170 g

unsalted butter, at room temperature

300 g

granulated white sugar

large eggs (about 210 grams), at room temperature

306 g

sour cream - full fat, at room temperature

1 tsp

vanilla bean paste or 2 teaspoon vanilla extract

312 g

all-purpose flour

2 tsp

baking powder

1 tsp

baking soda

1/2 tsp

salt

100 g

brown sugar

2 tbsp

+ 1 teaspoon ground cinnamon