Ingredients:

  • 1/2 cup (115g) unsalted butter, softened
  • 3/4 cup (150g) light brown sugar, packed
  • 1 large egg, room temperature
  • 1 tsp (5ml) pure vanilla extract
  • 2 cups (250g) all-purpose flour
  • 1 tsp (5g) ground cinnamon
  • 1/2 tsp (2g) baking soda
  • 1 tbsp (8g) cornstarch
  • 1/4 tsp (1.5g) fine sea salt
  • 3 tbsp (35g) light brown sugar
  • 1 tsp (2g) ground cinnamon

Instructions:

  1. Beat the softened butter and brown sugar on medium-high until the mixture is pale and fluffy.
  2. Add the egg and vanilla extract; beat for another 60 seconds until the batter is glossy and smooth.
  3. In a separate medium bowl, whisk together flour, cinnamon, baking soda, cornstarch, and salt.
  4. Gradually add the dry ingredients to the wet base, mixing on low speed just until the flour streaks disappear.
  5. Cover the dough and refrigerate for 3 hours to prevent spreading and concentrate flavor.
  6. Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
  7. Scoop 1 tablespoon of dough, roll into a ball, and roll in the cinnamon-sugar coating until fully submerged.
  8. Place balls 2 inches apart on the sheet and bake for 9–11 minutes until edges are set and mahogany-colored but centers remain soft.