Preheat your oven to 350° F. This is crucial for ensuring your cookies bake evenly and achieve that perfect golden color. Prepare a baking sheet by lining it with a silicone baking mat or parchment paper—this prevents sticking and makes for easier cleanup.
In a large mixing bowl, combine the unsalted butter with an electric mixer for about 30 seconds until it’s nice and creamy. The goal is to get it fluffy before adding the sugars.
Add both the granulated sugar and packed light brown sugar to the butter. Cream them together until light and fluffy—this should take about 2 minutes. Your mixture should be pale and airy, indicating you’ve incorporated enough air.
Next, add the large egg and vanilla. Mix on low speed just until combined; over-mixing can lead to denser cookies later on, and we want to keep them soft and chewy!
In another bowl, whisk together the dry ingredients: all-purpose flour, vanilla pudding mix, baking soda, cream of tartar, salt, and ground cinnamon. Mixing these separately ensures even distribution of the leavening agents and seasonings.
Gently add the dry mixture to the wet ingredients. Stir only until the flour is incorporated; it’s okay if there are still a few streaks of flour visible. This step is crucial for keeping your cookies tender.
Add half of the butterscotch chips into the batter, mixing gently. Reserve the other half for placing on top of your cookie dough balls later—this adds a lovely visual touch.
In a small bowl, combine the remaining granulated sugar and ground cinnamon. This will be your delicious coating that gives each cookie that signature snickerdoodle flavor.
Using a medium cookie scoop (about 1 and ½ tablespoons), scoop the dough and roll each scoop in the cinnamon sugar mixture. This creates a delightful crust on your cookies.
Place the rolled dough balls on your prepared baking sheet, ensuring they have enough space to spread. Gently press a few reserved butterscotch chips into the top of each dough ball.
Pop the baking sheet into the preheated oven and bake for about 8 to 10 minutes. Keep an eye on them; you want them to be golden but still soft in the center. My sweet spot is around 9 minutes for that perfect chewy texture!
Once baked, allow the cookies to cool on the sheet for at least 10 minutes before transferring them to a cooling rack. This helps them set and maintain that chewy inside.
Store your delicious cookies in an airtight container for up to 5 days. Trust me, they won’t last long!