These sour cream sugar cookies are an old-fashioned favorite! Pillowy soft and topped with a simple frosting, add your favorite festive sprinkles make these delicious cookies fit for any occasion.
In the bowl of a stand mixer fitted with the paddle attachment or in a large bowl with an electric mixer, cream butter and sugar until light and fluffy; about 3 minutes. Beat in eggs. Add sour cream and vanilla and mix until thoroughly combined.
In another large bowl, whisk together the flour, baking powder, baking soda, and salt. Gradually add the dry ingredients to the butter mixture and mix until just combined. The dough will be sticky and very soft. Divide dough in half. Shape each into a disk; wrap in plastic wrap. Refrigerate for at least 4 hours or freeze for 1 hour or until the dough is firm enough to roll.
Preheat oven to 350°F and line baking sheets with parchment paper. On a well-floured surface, roll each portion of dough to 1/4-in. thickness. Cut with a floured cookie cutter. Place cookies at least 2 inches apart on prepared cookie sheets.
Bake cookies in preheated oven for 10-12 minutes. Allow cookies to remain on cookie sheet for about 5 minutes before using a spatula to carefully remove them to a wire rack to cool completely.
Once the cookies are cooled completely, prepare the frosting. In the bowl of a stand mixer fitted with the paddle attachment or in a large bowl with an electric mixer, beat butter, confectioners' sugar, vanilla, salt, corn syrup and enough milk to reach desired consistency. Spread frosting over cookies. If desired, add festive sprinkles.
Notes
These are soft, cakey cut-out cookies. They will puff in the oven, so I do not recommend using detailed cookie cutters for this recipe.