Tutu's Super Crispy Sugar Cookies

From Food and Wine Magazine When I lived on the island of Hawaii, every Sunday I would buy cookies at the farmers’ market from an elderly woman everyone called Tutu, or “Grandmother.” She would sell only one bag per person until she ran out, which took about 30 minutes. Before I moved away, I asked her for the recipe. She gave it to me on the condition that I couldn’t share it with anyone for 25 years. Time has passed, and now I’d like to share it with your readers.—Letter to the Editor by Charlie Griggs; Hoodsport, WA.

• Ready In: 45 mins
• Yields: 2 dozen

Ingredients

• 3⁄4 teaspoon kosher salt
• 3⁄4 teaspoon baking soda
• 2  cups all-purpose flour
• 1  tablespoon pure vanilla extract
• 1 1⁄2 cups  rice krispies  cereal
• 3⁄4 cup sugar
• 1  cup unsalted butter, at room temperature

Directions

1. Preheat the oven to 300°. In a large bowl, using an electric mixer, beat the butter with the sugar and salt until smooth and fluffy. Mix the baking soda with the vanilla, then add to the butter mixture. Add the flour, 1 cup at a time, mixing well between additions. Gently stir in the Rice Krispies.
2. Lightly butter 2 baking sheets. Spoon 2-tablespoon-size mounds of cookie dough onto the prepared baking sheets, spacing them about 3 inches apart. Bake for 15 minutes, then remove the pans from the oven. Gently flatten the cookies with a spatula. Rotate the pans from top to bottom and front to back and continue baking until the cookies are lightly cracked on the top and golden brown on the bottom, about 25 minutes longer. Let cool slightly, then transfer to racks to cool completely.