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High altitude chocolate chip cookies, arranged on a baking sheet and sprinkled with sea salt.

Best Ever High Altitude Chocolate Chip Cookies

Heather Smoke
These chocolate chip cookies are so soft, chewy and simply perfect. This is a very quick and easy recipe, with no mixer needed!

All recipes on Curly Girl Kitchen are developed for high altitude at 5,280 feet. See FAQs for adjusting to higher or lower elevations.

4.96 from 69 votes
Prep Time 25 minutes
Cook Time 9 minutes
Chill Time 25 minutes
Total Time 59 minutes
Course Dessert
Cuisine American
Servings12 cookies

Ingredients
 

  • ½ cup unsalted butter, melted
  • cup granulated sugar
  • cup dark brown sugar, lightly packed
  • 1 tsp vanilla extract
  • 1 large egg
  • 1 ¾ cups all-purpose flour, spooned and leveled
  • 1 tsp corn starch
  • 1 tsp coarse Kosher salt (If using table salt, use half the amount. Also note that Morton's coarse Kosher salt is saltier than Kroger coarse Kosher salt. If using Morton's, reduce the salt to 1/2 - 3/4 tsp.)
  • ½ tsp baking soda
  • 1 cup dark or semi-sweet chocolate chips

Instructions
 

  • In a bowl, combine the melted butter with the granulated sugar and brown sugar. Use a wooden spoon to mix vigorously for 2 minutes.
  • Stir in the egg and vanilla until smooth.
  • In a separate bowl, sift together the flour, corn starch, salt and baking soda. Stir the dry ingredients into the wet ingredients, stirring just until no more flour remains. Let the dough sit at room temperature to cool for 10 minutes.
  • Stir the chocolate chips into the cooled dough. The dough will be thicker now than it was before cooling.
  • Divide the dough into 12 portions for medium-sized cookies and 24 portions for small cookies. Shape into balls, and flatten slightly with the palm of your hand. Refrigerate the dough balls for 25 minutes - no more, no less.
  • Preheat the oven to 350 F and line a large baking sheet with parchment paper.
  • Place the chilled dough 2 inches apart on the baking sheet. Bake the cookies on the center oven rack for 9-10 minutes (for medium cookies) or for 6 1/2 - 7 minutes (for small cookies). The cookies should still be very pale, with the edges set and the centers still underdone.
    TIP: For crispier cookies with browned, caramelized edges, simply bake the cookies for 4-5 minutes longer.
  • Cool the cookies on the baking sheet for 2 minutes, then transfer to a cooling rack to cool completely.

Notes

Cool cookies completely, then store in an airtight container for up to 3 days, or wrap well and freeze for 3-6 months.
Keyword Chocolate Chip, Cookies, High Altitude
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