Step 1

Preheat the oven to 350°F and spray a 9x5-inch loaf pan with non-stick cooking spray; set aside.

Step 2

In a large bowl with a hand mixer, cream together the butter and sugar until light and fluffy.

Step 3

Add in the eggs and vanilla and mix just until combined then mix in the sour cream and milk until incorporated; set aside.

Step 4

In a separate large bowl whisk together the flour, baking powder, baking soda, salt, and cinnamon.

Step 5

Add the dry ingredients into the wet ingredients and stir in until just combined and no flour streaks remain.

Step 6

Lastly, fold in the sprinkles but do not overmix them or they could bleed into the batter.

Step 7

Spread into the prepared loaf pan and bake for about 60 to 70 minutes or until a toothpick comes clean from the center and the top is just golden. Remove from the oven and cool in the pan for 5 minutes then transfer to a wire rack to cool completely.

Step 8

Meanwhile, make the glaze by whisking together the powdered sugar, heavy cream, and vanilla. Spread the icing over the cooled bread and smooth out with a rubber spatula.

Step 9

Sprinkle with extra sprinkles if desired then let set then slice and serve.