In a large mixing bowl, with an electric mixer on medium speed, cream shortening, sugar, and powdered sugar together for 2-3 minutes until smooth, light, and fluffy.
2 cups shortening, 1 cup sugar, 1 cup powdered sugar
Add egg and vanilla extract and continue mixing for another minute, just until the egg is combined.
1 egg, 1 tsp vanilla extract
Gradually add the flour to the wet ingredients in batches and mix until just blended. Do not over-mix.
Using a 4 TBS cookie scoop, scoop the dough and roll into a ball with your hands. Roll each ball in sugar and place on the cookie sheet at least 2 inches apart. Carefully flatten each cooke with the bottom of a glass or your palm.
Bake cookies for 9 minutes at 375 degrees, rotating the pans halfway through to ensure even baking.
Let cookies cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely. Store in an airtight container for 2-3 days or freeze for up to 3 months.
Notes
*Make sure to read the cookie baking tips to get answers to common questions about baking cookies.**These cookies are fragile and dry out quickly. If you're not going to eat them all within a day or two, pop them in a Ziplock bag and freeze them. You can pull one or two out at a time and they'll be almost as fresh as the day they were baked.