preheat oven to 350°F
add room temperature butter to mixing bowl
beat butter with electric hand mixer
add sugar to butter in mixing bowl
beat butter and sugar together with electric hand mixer
add vanilla extract
add kosher salt
mix with electric hand mixer
add flour **do not add all at once, add 1/4 cup at a time and incorporate. Make sure that the dough does not become too thick/dry/breaks apart. You may only end up using 1 3/4c flour if your dough seems to be very dry
place pecans or walnuts in a food processor and chop
add nuts to cookie dough mixture and stir with a spatula to incorporate
Wrap in plastic wrap and refrigerate for 45 minutes
Remove dough from refrigerator. Shape dough into 1" balls and place on baking sheet
Bake for 8-12 minutes at 350°
Working quickly, once cookies are cool enough to handle, but still very warm, carefully toss them in a bowl of confectioners sugar **Note: When cookies are still hot/warm they will be very likely to break apart. Be extra careful while handling them.
Set snowball cookies on cooling rack to cool before adding second coat of Confection's sugar
Once the cookies are completely cooled, carefully toss them again in the confectioners sugar.