Preheat the oven to 350°F (175°C). In a mixing bowl, cream together the softened butter and sugar until light and fluffy.

Beat in the eggs one at a time, then stir in the vanilla extract.

Combine the flour, baking powder, and salt; gradually add to the creamed mixture.

Roll the dough into small balls and place them on a baking sheet.

Make a small indentation in the center of each ball and fill with peach preserves mixed with cinnamon.

Bake for 15 minutes or until lightly golden.