Prepare a baking sheet with parchment paper or cooking spray and preheat the oven to 350 degrees F. Beat one egg well in a small bowl. Reserve until use.
Step 1
INSTRUCTIONS
Add chilled unsalted butter and brown sugar to a paddle-attached stand mixer. If you don't have a stand mixer, use a large bowl and electric hand mixer.
Step 2
Beat butter and sugar on medium-high speed until combined. This cold butter mixture will look grainy with small beads, not fluffy.
Step 3
Add two tablespoons of beaten egg to the stand mixer with the creamed butter and sugar. Medium-high speed mixing until wet ingredients are combined.
Step 4
Mix gluten-free flour, baking powder, and sea salt in a separate bowl. Before adding dry ingredients, use a rubber spatula to scrape the stand mixer. Medium-speed beating creates a thick dough.
Step 5
Stir in chocolate chips. Remove all dough from the stand mixer and place it on the baking sheet using a rubber spatula. Top with chocolate chips if desired. It will spread, so give the cookie dough space.
Step 6
Bake 15–20 minutes on the preheated oven centre rack. Gooiest cookies are slightly undercooked in the centre at 15 minutes.
Step 7
18 minutes yields crispy edges, a chewy centre, and golden brown edges. 20 minutes yields a crispy caramelised brown butter cookie.
Step 8
Let the cookie cool for 15 minutes before serving. Add vanilla ice cream to this cookie for a decadent dessert.