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Crinkly Crackly Butter Toffee Sugar Cookies

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These sugar cookies are soft, buttery, and irresistibly crinkly thanks to a touch of cream of tartar. With gooey bits of toffee throughout and optional sparkly sugar coating, they’re chewy on the inside, crisp on the edges, and downright addictive.

Ingredients

Scale
  • 1 cup unsalted butter, softened
  • 1¼ cups granulated sugar
  • ½ cup light brown sugar
  • 1 large egg
  • 1 egg yolk
  • 1 tablespoon vanilla extract
  • 2½ cups all-purpose flour
  • ½ teaspoon baking soda
  • ½ teaspoon cream of tartar
  • ½ teaspoon salt
  • ¾ cup toffee bits (store-bought like Heath, or homemade)
  • Optional: Extra granulated sugar for rolling
  • Optional: Flaky sea salt for topping

Instructions

  1. Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
  2. In a large bowl, cream together the butter, granulated sugar, and brown sugar until light and fluffy (about 2–3 minutes).
  3. Beat in the egg, egg yolk, and vanilla extract until smooth.
  4. In a separate bowl, whisk together the flour, baking soda, cream of tartar, and salt.
  5. Gradually add the dry ingredients to the wet ingredients. Mix just until combined. Fold in the toffee bits.
  6. Scoop dough into 1.5-tablespoon-sized balls. Roll in extra sugar if desired. Place on baking sheet 2 inches apart and gently flatten the tops.
  7. Bake for 9–11 minutes, or until the edges are just set and the centers are still soft. The cookies will puff up and crinkle as they cool!
  8. Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.

Notes

  • Rolling in sugar adds sparkle and slight crunch.
  • Sprinkle flaky salt on top before baking for a bakery-style finish.
  • Store cookies in an airtight container for up to 5 days – they stay soft!

Nutrition

Find it online: https://easyfoodflash.com/crinkly-crackly-butter-toffee-sugar-cookies/