Preheat oven to 350°F.

Sift together flour, baking powder, and salt; set aside.

Cream together the butter and 1 & 1/2 cups sugar until pale yellow, about 2-3 minutes.

Mix in eggs until well combined.

Add the flour mixture, 1/2 cup at a time, until the dough comes together.

In a separate, small bowl, combine 1/2 cup sugar and cinnamon together.

Shape dough into about 1-3/4 inch balls and roll the balls in the cinnamon sugar.

Space the balls about 3 inches apart on an ungreased baking sheet.

Bake for 9-10 minutes. (Oven temperatures may vary. Cooking time may be more or less.)