In a large bowl, mix together the butter, sugar, salt and cinnamon until creamy and fluffy.
Mix in the eggs until well combined then stir in the vanilla and sour cream.
In a separate bowl, mix together the flour and baking powder, then add to the cream mixture and mix until well combined.
Stir in the cinnamon chips.
Spoon the batter into 4 mini loaf pans ⅔ full.
In a bowl, mix together 3 tbsp of sugar and 3 tsp of cinnamon and sprinkle over the loafs.
Bake in a preheated oven at 350° for 35 to 38 minutes.