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1
Preheat your oven to 350 degrees.
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2
With your mixer cream together 1/2 cup softened butter with 1 cup sugar and mix for a couple of minutes until smooth.
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3
Add in sour cream, eggs, and vanilla and mix well.
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4
In a large bowl sift together flour, baking powder, baking soda, and salt.
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5
Slowly add the dry ingredients into the wet and mix well.
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6
Measure three tablespoons of dough for each cookie.
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7
Use your hands to roll three tablespoons of cookie dough into a smooth ball.
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8
Place on ungreased cookie sheets, making sure to leave about 1 inch between each cookie.
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9
Using your hand to lightly flatten the dough a bit.
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10
Bake for 11-12 minutes, then immediately remove from the oven.
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11
The cookies will appear under-baked a bit but this is what you want.
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12
Carefully transfer the cookies to a cooling rack and repeat the process until all of the dough is gone.
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13
To make the frosting, beat butter with a mixer for about 30 seconds, then add in powdered sugar, one cup at a time.
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14
Add in vanilla and 1-2 tablespoons of milk and mix until light and fluffy.
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15
Use a knife to slather each cookie with frosting.
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16
Top with sprinkles.
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17
*Notes you can make these a bit smaller by using 2 tablespoons of dough and baking for 10 minutes.
