In a large bowl, cream the softened butter and powdered sugar together until light and fluffy, about 2-3 minutes. Add the sweetened condensed milk and vanilla extract, and beat until well combined.
Step 2: Combine Dry Ingredients
In a separate bowl, whisk together the flour, cornstarch, and a pinch of salt. Gradually add the dry ingredients to the wet mixture, stirring until a soft dough forms. Be careful not to overmix.
Step 3: Shape the Cookies
Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper. Roll the dough into 1-inch balls and place them on the prepared baking sheet, spacing them about 2 inches apart.
Step 4: Bake the Cookies
Bake the cookies for 12-15 minutes, or until the edges are just starting to turn golden. The cookies should remain pale in color to resemble snow. Allow them to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.
Step 5: Dust with Powdered Sugar
Once the cookies have cooled, dust them generously with powdered sugar to give them their "snowy" appearance. You can add more powdered sugar if you like a thicker coating.
Notes
Soft Butter is Key: Make sure your butter is softened to room temperature before mixing, as this helps create a smooth, creamy dough.
Don’t Overbake: These cookies should remain soft, so be sure to take them out of the oven once the edges just start to turn golden. They should still be pale in color.
Add a Festive Twist: For a holiday twist, add a drop of almond extract or lemon zest to the dough, or roll the cookies in colored sugar sprinkles before baking.