Preheat the oven to 350 degrees F and spray a 9X5 loaf pan with a non-stick cooking spray. Set aside.
In a mixing bowl, whisk together the flour, baking powder, baking soda, ground cinnamon and salt.
In a separate bowl of a stand up mixer, beat together the butter and sugar until light and fluffy.
Add in the eggs, vanilla extract, sour cream and milk. Mix until just combined.
Then add the flour mixture into the wet ingredients and stir in with a spatula or wooden spoon until just combined.
Gently stir in 1/2 cup of the sprinkles and make sure not to over mix or the sprinkles might bleed into the batter.
Pour the batter into a prepared pan. Bake for 60-70 minutes until a toothpick inserted into the center of the bread comes out clean.
Let the bread cool in the pan for 10 minutes and then carefully move it to a wire rack to cool completely.
While the bread is cooling, whisk together the glaze ingredients in a mixing bowl.
Spread the glaze over the cooled bread and top with the remaining sprinkles.
Then the bread is ready to slice, serve and enjoy!
Notes
If the top of the bread is getting too brown when baking and the inside is not cooked through, tent the loaf pan with foil to finish baking until the bread is cooked through. The bread will keep in an airtight container at room temperature for up to 3 days.