Preheat the oven to 350°F (175°C).

In a mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.

Beat in the eggs one at a time, followed by the vanilla extract.

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

Gradually add the dry mixture to the wet ingredients, mixing until just combined.

Roll the dough into small balls about one inch in diameter.

Place the dough balls on a lined baking sheet and bake for about 10 minutes.

Let them cool for a few minutes and then roll them in powdered sugar.