Preheat the oven to 375 degrees Fahrenheit and line a large cookie sheet with parchment paper. You can also spray the large baking sheet with cooking spray if you don’t have parchment on hand.

Transfer the egg, peanut butter, vanilla extract, baking soda and sea salt to a large mixing bowl (everything but the chocolate chips). Mix everything together until a thick, sticky dough forms. I use a fork to do the mixing but you can also use an electric mixer or hand mixer if you prefer.

Add in the chocolate chips and mix them into the cookie dough until they are well-incorporated.

Roll the peanut butter cookie dough into balls and place them on the prepared baking tray at least one inch apart from one another.

Gently press the cookie dough balls to create flat discs. If the dough tries to crack apart, you can press it back together if you’d like. The cookie dough will spread during the baking process so be sure you’ve left space for the cookies to grow. If you'd like, press extra chocolate chips into the tops of the cookies.

Bake on the center rack of the preheated oven for 12 to 15 minutes or until the edges are just slightly golden brown and the cookies have set up.

Allow the cookies to cool completely before removing them from the cookie sheet. If they are moved while they are still warm, they will likely crumble as they are delicate before they set up.