Begin by using a large mixing bowl and a hand mixer.
Beat the softened butter on medium speed for about 30 seconds.
Add the granulated sugar, baking soda, cream of tartar, and salt.
Continue to beat until well combined, scraping the sides of the bowl as necessary.
Add the eggs and vanilla extract, and mix until fully incorporated.
Gradually add the all-purpose flour to form the dough.
Stir in 1 cup of the cereal.
Cover the dough and let it chill in the refrigerator for 30 to 60 minutes, or until it's easy to handle.
Preheat your oven to 375°F (190°C).
Take the remaining 3¹⁄₂ cups of cereal and place it in a resealable plastic bag.
Crush the cereal by gently rolling a rolling pin over it.
Shape the dough into 1¹⁄₄-inch balls and then roll them in the crushed cereal, ensuring an even coating.
Place the dough balls about 2 inches apart on an ungreased cookie sheet.
Bake in the preheated oven for 10 to 12 minutes or until the bottoms of the cookies are lightly browned.
Allow them to cool on the cookie sheet for 2 minutes before transferring them to a wire rack to cool completely.
Notes / Tips / Wine Advice:
This recipe makes approximately 48 servings, with each serving being one cookie.
Storage:
To store these delicious cookies, layer them between sheets of waxed paper in an airtight container. You can keep them at room temperature for up to 3 days or freeze them for up to 1 month. Enjoy!