Ingredients
Equipment
Method
Make the cookies
- Heat the oven to 350°F.
- Line an 18x13-inch rimmed baking sheet with parchment paper.
- Whisk the flour, baking soda, and salt together in a medium bowl.
- Beat the butter, brown sugar, and granulated sugar in a large bowl until creamy, about 2 minutes.
- Beat in the egg, egg yolk, and vanilla until combined.
- Mix in the flour mixture on low speed just until no dry streaks remain.
- Fold in the butterscotch chips.
- Scoop the dough into 1 1/2-tablespoon portions onto the prepared sheet, spacing them about 2 inches apart.
- Bake in batches for 10–12 minutes, until the edges are lightly golden and the centers still look soft.
- Cool the cookies on the sheet for 5 minutes.
- Transfer the cookies to a rack to cool completely.
- Let the sheet cool before baking the remaining dough.
Make the glaze
- Whisk the powdered sugar, cream soda, and vanilla in a small bowl until smooth and thick enough to drizzle.
- Drizzle the glaze over the cooled cookies.
- Let the glaze set for about 20 minutes before serving.
Notes
For soft centers, remove the cookies while they still look soft in the middle. Store in an airtight container in the refrigerator for up to 4 days; freeze for up to 2 months. For a gluten-free variation, use a measure-for-measure gluten-free flour blend.
